Merge branch 'master' into 10244-add-project-ci-cd-settings

220 files changed, 3514 insertions, 1924 deletions

diff --git a/app/assets/javascripts/boards/models/list.js b/app/assets/javascripts/boards/models/list.js
index e210d69895e..7144f4190e7 100644
--- a/app/assets/javascripts/boards/models/list.js
+++ b/app/assets/javascripts/boards/models/list.js
@@ -113,6 +113,8 @@ class List {
         issue.id = data.id;
         issue.iid = data.iid;
         issue.project = data.project;
+        issue.path = data.real_path;
+        issue.referencePath = data.reference_path;
 
         if (this.issuesSize > 1) {
           const moveBeforeId = this.issues[1].id;
diff --git a/app/assets/javascripts/branches/branches_delete_modal.js b/app/assets/javascripts/branches/branches_delete_modal.js
index 839e369eaf6..f34496f84c6 100644
--- a/app/assets/javascripts/branches/branches_delete_modal.js
+++ b/app/assets/javascripts/branches/branches_delete_modal.js
@@ -16,6 +16,7 @@ class DeleteModal {
   bindEvents() {
     this.$toggleBtns.on('click', this.setModalData.bind(this));
     this.$confirmInput.on('input', this.setDeleteDisabled.bind(this));
+    this.$deleteBtn.on('click', this.setDisableDeleteButton.bind(this));
   }
 
   setModalData(e) {
@@ -30,6 +31,16 @@ class DeleteModal {
     this.$deleteBtn.attr('disabled', e.currentTarget.value !== this.branchName);
   }
 
+  setDisableDeleteButton(e) {
+    if (this.$deleteBtn.is('[disabled]')) {
+      e.preventDefault();
+      e.stopPropagation();
+      return false;
+    }
+
+    return true;
+  }
+
   updateModal() {
     this.$branchName.text(this.branchName);
     this.$confirmInput.val('');
diff --git a/app/assets/javascripts/clusters/components/applications.vue b/app/assets/javascripts/clusters/components/applications.vue
index f8dcdf3f60a..9c12b89240c 100644
--- a/app/assets/javascripts/clusters/components/applications.vue
+++ b/app/assets/javascripts/clusters/components/applications.vue
@@ -1,96 +1,102 @@
 <script>
-  import _ from 'underscore';
-  import { s__, sprintf } from '../../locale';
-  import applicationRow from './application_row.vue';
-  import clipboardButton from '../../vue_shared/components/clipboard_button.vue';
-  import {
-    APPLICATION_INSTALLED,
-    INGRESS,
-  } from '../constants';
+import _ from 'underscore';
+import { s__, sprintf } from '../../locale';
+import applicationRow from './application_row.vue';
+import clipboardButton from '../../vue_shared/components/clipboard_button.vue';
+import { APPLICATION_INSTALLED, INGRESS } from '../constants';
 
-  export default {
-    components: {
-      applicationRow,
-      clipboardButton,
+export default {
+  components: {
+    applicationRow,
+    clipboardButton,
+  },
+  props: {
+    applications: {
+      type: Object,
+      required: false,
+      default: () => ({}),
     },
-    props: {
-      applications: {
-        type: Object,
-        required: false,
-        default: () => ({}),
-      },
-      helpPath: {
-        type: String,
-        required: false,
-        default: '',
-      },
-      ingressHelpPath: {
-        type: String,
-        required: false,
-        default: '',
-      },
-      ingressDnsHelpPath: {
-        type: String,
-        required: false,
-        default: '',
-      },
-      managePrometheusPath: {
-        type: String,
-        required: false,
-        default: '',
-      },
+    helpPath: {
+      type: String,
+      required: false,
+      default: '',
     },
-    computed: {
-      generalApplicationDescription() {
-        return sprintf(
-          _.escape(s__(
+    ingressHelpPath: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    ingressDnsHelpPath: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    managePrometheusPath: {
+      type: String,
+      required: false,
+      default: '',
+    },
+  },
+  computed: {
+    generalApplicationDescription() {
+      return sprintf(
+        _.escape(
+          s__(
             `ClusterIntegration|Install applications on your Kubernetes cluster.
             Read more about %{helpLink}`,
-          )), {
-            helpLink: `<a href="${this.helpPath}">
+          ),
+        ),
+        {
+          helpLink: `<a href="${this.helpPath}">
               ${_.escape(s__('ClusterIntegration|installing applications'))}
             </a>`,
-          },
-          false,
-        );
-      },
-      ingressId() {
-        return INGRESS;
-      },
-      ingressInstalled() {
-        return this.applications.ingress.status === APPLICATION_INSTALLED;
-      },
-      ingressExternalIp() {
-        return this.applications.ingress.externalIp;
-      },
-      ingressDescription() {
-        const extraCostParagraph = sprintf(
-          _.escape(s__(
+        },
+        false,
+      );
+    },
+    ingressId() {
+      return INGRESS;
+    },
+    ingressInstalled() {
+      return this.applications.ingress.status === APPLICATION_INSTALLED;
+    },
+    ingressExternalIp() {
+      return this.applications.ingress.externalIp;
+    },
+    ingressDescription() {
+      const extraCostParagraph = sprintf(
+        _.escape(
+          s__(
             `ClusterIntegration|%{boldNotice} This will add some extra resources
             like a load balancer, which may incur additional costs depending on
-            the hosting provider your Kubernetes cluster is installed on. If you are using GKE,
-            you can %{pricingLink}.`,
-          )), {
-            boldNotice: `<strong>${_.escape(s__('ClusterIntegration|Note:'))}</strong>`,
-            pricingLink: `<a href="https://cloud.google.com/compute/pricing#lb" target="_blank" rel="noopener noreferrer">
+            the hosting provider your Kubernetes cluster is installed on. If you are using
+            Google Kubernetes Engine, you can %{pricingLink}.`,
+          ),
+        ),
+        {
+          boldNotice: `<strong>${_.escape(s__('ClusterIntegration|Note:'))}</strong>`,
+          pricingLink: `<a href="https://cloud.google.com/compute/pricing#lb" target="_blank" rel="noopener noreferrer">
               ${_.escape(s__('ClusterIntegration|check the pricing here'))}</a>`,
-          },
-          false,
-        );
+        },
+        false,
+      );
 
-        const externalIpParagraph = sprintf(
-          _.escape(s__(
+      const externalIpParagraph = sprintf(
+        _.escape(
+          s__(
             `ClusterIntegration|After installing Ingress, you will need to point your wildcard DNS
             at the generated external IP address in order to view your app after it is deployed. %{ingressHelpLink}`,
-          )), {
-            ingressHelpLink: `<a href="${this.ingressHelpPath}">
+          ),
+        ),
+        {
+          ingressHelpLink: `<a href="${this.ingressHelpPath}">
               ${_.escape(s__('ClusterIntegration|More information'))}
             </a>`,
-          },
-          false,
-        );
+        },
+        false,
+      );
 
-        return `
+      return `
           <p>
             ${extraCostParagraph}
           </p>
@@ -98,22 +104,25 @@
             ${externalIpParagraph}
           </p>
         `;
-      },
-      prometheusDescription() {
-        return sprintf(
-          _.escape(s__(
+    },
+    prometheusDescription() {
+      return sprintf(
+        _.escape(
+          s__(
             `ClusterIntegration|Prometheus is an open-source monitoring system
             with %{gitlabIntegrationLink} to monitor deployed applications.`,
-          )), {
-            gitlabIntegrationLink: `<a href="https://docs.gitlab.com/ce/user/project/integrations/prometheus.html"
+          ),
+        ),
+        {
+          gitlabIntegrationLink: `<a href="https://docs.gitlab.com/ce/user/project/integrations/prometheus.html"
               target="_blank" rel="noopener noreferrer">
               ${_.escape(s__('ClusterIntegration|GitLab Integration'))}</a>`,
-          },
-          false,
-        );
-      },
+        },
+        false,
+      );
     },
-  };
+  },
+};
 </script>
 
 <template>
@@ -205,7 +214,7 @@
               >
                 {{ s__(`ClusterIntegration|The IP address is in
                 the process of being assigned. Please check your Kubernetes
-                cluster or Quotas on GKE if it takes a long time.`) }}
+                cluster or Quotas on Google Kubernetes Engine if it takes a long time.`) }}
 
                 <a
                   :href="ingressHelpPath"
diff --git a/app/assets/javascripts/create_merge_request_dropdown.js b/app/assets/javascripts/create_merge_request_dropdown.js
index fb1fc9cd32e..a88b6971f90 100644
--- a/app/assets/javascripts/create_merge_request_dropdown.js
+++ b/app/assets/javascripts/create_merge_request_dropdown.js
@@ -84,20 +84,21 @@ export default class CreateMergeRequestDropdown {
         if (data.can_create_branch) {
           this.available();
           this.enable();
+          this.updateBranchName(data.suggested_branch_name);
 
           if (!this.droplabInitialized) {
             this.droplabInitialized = true;
             this.initDroplab();
             this.bindEvents();
           }
-        } else if (data.has_related_branch) {
+        } else {
           this.hide();
         }
       })
       .catch(() => {
         this.unavailable();
         this.disable();
-        Flash('Failed to check if a new branch can be created.');
+        Flash(__('Failed to check related branches.'));
       });
   }
 
@@ -409,13 +410,16 @@ export default class CreateMergeRequestDropdown {
     this.unavailableButton.classList.remove('hide');
   }
 
+  updateBranchName(suggestedBranchName) {
+    this.branchInput.value = suggestedBranchName;
+    this.updateCreatePaths('branch', suggestedBranchName);
+  }
+
   updateInputState(target, ref, result) {
     // target - 'branch' or 'ref' - which the input field we are searching a ref for.
     // ref - string - what a user typed.
     // result - string - what has been found on backend.
 
-    const pathReplacement = `$1${ref}`;
-
     // If a found branch equals exact the same text a user typed,
     // that means a new branch cannot be created as it already exists.
     if (ref === result) {
@@ -426,18 +430,12 @@ export default class CreateMergeRequestDropdown {
         this.refIsValid = true;
         this.refInput.dataset.value = ref;
         this.showAvailableMessage('ref');
-        this.createBranchPath = this.createBranchPath.replace(this.regexps.ref.createBranchPath,
-          pathReplacement);
-        this.createMrPath = this.createMrPath.replace(this.regexps.ref.createMrPath,
-          pathReplacement);
+        this.updateCreatePaths(target, ref);
       }
     } else if (target === 'branch') {
       this.branchIsValid = true;
       this.showAvailableMessage('branch');
-      this.createBranchPath = this.createBranchPath.replace(this.regexps.branch.createBranchPath,
-        pathReplacement);
-      this.createMrPath = this.createMrPath.replace(this.regexps.branch.createMrPath,
-        pathReplacement);
+      this.updateCreatePaths(target, ref);
     } else {
       this.refIsValid = false;
       this.refInput.dataset.value = ref;
@@ -457,4 +455,15 @@ export default class CreateMergeRequestDropdown {
       this.disableCreateAction();
     }
   }
+
+  // target - 'branch' or 'ref'
+  // ref - string - the new value to use as branch or ref
+  updateCreatePaths(target, ref) {
+    const pathReplacement = `$1${ref}`;
+
+    this.createBranchPath = this.createBranchPath.replace(this.regexps[target].createBranchPath,
+      pathReplacement);
+    this.createMrPath = this.createMrPath.replace(this.regexps[target].createMrPath,
+      pathReplacement);
+  }
 }
diff --git a/app/assets/javascripts/due_date_select.js b/app/assets/javascripts/due_date_select.js
index 842a4255f08..4164149dd06 100644
--- a/app/assets/javascripts/due_date_select.js
+++ b/app/assets/javascripts/due_date_select.js
@@ -2,7 +2,9 @@
 
 import $ from 'jquery';
 import Pikaday from 'pikaday';
+import { __ } from '~/locale';
 import axios from './lib/utils/axios_utils';
+import { timeFor } from './lib/utils/datetime_utility';
 import { parsePikadayDate, pikadayToString } from './lib/utils/datefix';
 
 class DueDateSelect {
@@ -14,6 +16,7 @@ class DueDateSelect {
     this.$dropdownParent = $dropdownParent;
     this.$datePicker = $dropdownParent.find('.js-due-date-calendar');
     this.$block = $block;
+    this.$sidebarCollapsedValue = $block.find('.sidebar-collapsed-icon');
     this.$selectbox = $dropdown.closest('.selectbox');
     this.$value = $block.find('.value');
     this.$valueContent = $block.find('.value-content');
@@ -128,7 +131,8 @@ class DueDateSelect {
 
   submitSelectedDate(isDropdown) {
     const selectedDateValue = this.datePayload[this.abilityName].due_date;
-    const displayedDateStyle = this.displayedDate !== 'No due date' ? 'bold' : 'no-value';
+    const hasDueDate = this.displayedDate !== 'No due date';
+    const displayedDateStyle = hasDueDate ? 'bold' : 'no-value';
 
     this.$loading.removeClass('hidden').fadeIn();
 
@@ -145,10 +149,13 @@ class DueDateSelect {
 
     return axios.put(this.issueUpdateURL, this.datePayload)
       .then(() => {
+        const tooltipText = hasDueDate ? `${__('Due date')}<br />${selectedDateValue} (${timeFor(selectedDateValue)})` : __('Due date');
         if (isDropdown) {
           this.$dropdown.trigger('loaded.gl.dropdown');
           this.$dropdown.dropdown('toggle');
         }
+        this.$sidebarCollapsedValue.attr('data-original-title', tooltipText);
+
         return this.$loading.fadeOut();
       });
   }
diff --git a/app/assets/javascripts/ide/components/changed_file_icon.vue b/app/assets/javascripts/ide/components/changed_file_icon.vue
index 037e3efb4ce..1fc11c84639 100644
--- a/app/assets/javascripts/ide/components/changed_file_icon.vue
+++ b/app/assets/javascripts/ide/components/changed_file_icon.vue
@@ -1,31 +1,87 @@
 <script>
-import icon from '~/vue_shared/components/icon.vue';
+import tooltip from '~/vue_shared/directives/tooltip';
+import Icon from '~/vue_shared/components/icon.vue';
+import { pluralize } from '~/lib/utils/text_utility';
+import { __, sprintf } from '~/locale';
 
 export default {
   components: {
-    icon,
+    Icon,
+  },
+  directives: {
+    tooltip,
   },
   props: {
     file: {
       type: Object,
       required: true,
     },
+    showTooltip: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    showStagedIcon: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   computed: {
     changedIcon() {
-      return this.file.tempFile ? 'file-addition' : 'file-modified';
+      const suffix = this.file.staged && !this.showStagedIcon ? '-solid' : '';
+      return this.file.tempFile ? `file-addition${suffix}` : `file-modified${suffix}`;
+    },
+    stagedIcon() {
+      return `${this.changedIcon}-solid`;
     },
     changedIconClass() {
-      return `multi-${this.changedIcon}`;
+      return `multi-${this.changedIcon} prepend-left-5 pull-left`;
+    },
+    tooltipTitle() {
+      if (!this.showTooltip) return undefined;
+
+      const type = this.file.tempFile ? 'addition' : 'modification';
+
+      if (this.file.changed && !this.file.staged) {
+        return sprintf(__('Unstaged %{type}'), {
+          type,
+        });
+      } else if (!this.file.changed && this.file.staged) {
+        return sprintf(__('Staged %{type}'), {
+          type,
+        });
+      } else if (this.file.changed && this.file.staged) {
+        return sprintf(__('Unstaged and staged %{type}'), {
+          type: pluralize(type),
+        });
+      }
+
+      return undefined;
     },
   },
 };
 </script>
 
 <template>
-  <icon
-    :name="changedIcon"
-    :size="12"
-    :css-classes="`ide-file-changed-icon ${changedIconClass}`"
-  />
+  <span
+    v-tooltip
+    :title="tooltipTitle"
+    data-container="body"
+    data-placement="right"
+    class="ide-file-changed-icon"
+  >
+    <icon
+      v-if="file.staged && showStagedIcon"
+      :name="stagedIcon"
+      :size="12"
+      :css-classes="changedIconClass"
+    />
+    <icon
+      v-if="file.changed || file.tempFile || (file.staged && !showStagedIcon)"
+      :name="changedIcon"
+      :size="12"
+      :css-classes="changedIconClass"
+    />
+  </span>
 </template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/actions.vue b/app/assets/javascripts/ide/components/commit_sidebar/actions.vue
index 2cbd982af19..45321df191c 100644
--- a/app/assets/javascripts/ide/components/commit_sidebar/actions.vue
+++ b/app/assets/javascripts/ide/components/commit_sidebar/actions.vue
@@ -1,41 +1,27 @@
 <script>
-  import { mapState } from 'vuex';
-  import { sprintf, __ } from '~/locale';
-  import * as consts from '../../stores/modules/commit/constants';
-  import RadioGroup from './radio_group.vue';
+import { mapState } from 'vuex';
+import { sprintf, __ } from '~/locale';
+import * as consts from '../../stores/modules/commit/constants';
+import RadioGroup from './radio_group.vue';
 
-  export default {
-    components: {
-      RadioGroup,
+export default {
+  components: {
+    RadioGroup,
+  },
+  computed: {
+    ...mapState(['currentBranchId']),
+    commitToCurrentBranchText() {
+      return sprintf(
+        __('Commit to %{branchName} branch'),
+        { branchName: `<strong class="monospace">${this.currentBranchId}</strong>` },
+        false,
+      );
     },
-    computed: {
-      ...mapState([
-        'currentBranchId',
-      ]),
-      newMergeRequestHelpText() {
-        return sprintf(
-          __('Creates a new branch from %{branchName} and re-directs to create a new merge request'),
-          { branchName: this.currentBranchId },
-        );
-      },
-      commitToCurrentBranchText() {
-        return sprintf(
-          __('Commit to %{branchName} branch'),
-          { branchName: `<strong>${this.currentBranchId}</strong>` },
-          false,
-        );
-      },
-      commitToNewBranchText() {
-        return sprintf(
-          __('Creates a new branch from %{branchName}'),
-          { branchName: this.currentBranchId },
-        );
-      },
-    },
-    commitToCurrentBranch: consts.COMMIT_TO_CURRENT_BRANCH,
-    commitToNewBranch: consts.COMMIT_TO_NEW_BRANCH,
-    commitToNewBranchMR: consts.COMMIT_TO_NEW_BRANCH_MR,
-  };
+  },
+  commitToCurrentBranch: consts.COMMIT_TO_CURRENT_BRANCH,
+  commitToNewBranch: consts.COMMIT_TO_NEW_BRANCH,
+  commitToNewBranchMR: consts.COMMIT_TO_NEW_BRANCH_MR,
+};
 </script>
 
 <template>
@@ -53,13 +39,11 @@
       :value="$options.commitToNewBranch"
       :label="__('Create a new branch')"
       :show-input="true"
-      :help-text="commitToNewBranchText"
     />
     <radio-group
       :value="$options.commitToNewBranchMR"
       :label="__('Create a new branch and merge request')"
       :show-input="true"
-      :help-text="newMergeRequestHelpText"
     />
   </div>
 </template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/empty_state.vue b/app/assets/javascripts/ide/components/commit_sidebar/empty_state.vue
new file mode 100644
index 00000000000..6424b93ce54
--- /dev/null
+++ b/app/assets/javascripts/ide/components/commit_sidebar/empty_state.vue
@@ -0,0 +1,93 @@
+<script>
+import { mapActions, mapState, mapGetters } from 'vuex';
+import Icon from '~/vue_shared/components/icon.vue';
+import tooltip from '~/vue_shared/directives/tooltip';
+
+export default {
+  components: {
+    Icon,
+  },
+  directives: {
+    tooltip,
+  },
+  props: {
+    noChangesStateSvgPath: {
+      type: String,
+      required: true,
+    },
+    committedStateSvgPath: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    ...mapState(['lastCommitMsg', 'rightPanelCollapsed']),
+    ...mapGetters(['collapseButtonIcon', 'collapseButtonTooltip']),
+    statusSvg() {
+      return this.lastCommitMsg ? this.committedStateSvgPath : this.noChangesStateSvgPath;
+    },
+  },
+  methods: {
+    ...mapActions(['toggleRightPanelCollapsed']),
+  },
+};
+</script>
+
+<template>
+  <div
+    class="multi-file-commit-panel-section ide-commit-empty-state js-empty-state"
+  >
+    <header
+      class="multi-file-commit-panel-header"
+      :class="{
+        'is-collapsed': rightPanelCollapsed,
+      }"
+    >
+      <button
+        v-tooltip
+        :title="collapseButtonTooltip"
+        data-container="body"
+        data-placement="left"
+        type="button"
+        class="btn btn-transparent multi-file-commit-panel-collapse-btn"
+        :aria-label="__('Toggle sidebar')"
+        @click.stop="toggleRightPanelCollapsed"
+      >
+        <icon
+          :name="collapseButtonIcon"
+          :size="18"
+        />
+      </button>
+    </header>
+    <div
+      class="ide-commit-empty-state-container"
+      v-if="!rightPanelCollapsed"
+    >
+      <div class="svg-content svg-80">
+        <img :src="statusSvg" />
+      </div>
+      <div class="append-right-default prepend-left-default">
+        <div
+          class="text-content text-center"
+          v-if="!lastCommitMsg"
+        >
+          <h4>
+            {{ __('No changes') }}
+          </h4>
+          <p>
+            {{ __('Edit files in the editor and commit changes here') }}
+          </p>
+        </div>
+        <div
+          class="text-content text-center"
+          v-else
+        >
+          <h4>
+            {{ __('All changes are committed') }}
+          </h4>
+          <p v-html="lastCommitMsg"></p>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/list.vue b/app/assets/javascripts/ide/components/commit_sidebar/list.vue
index 453208f3f19..ff05ee8682a 100644
--- a/app/assets/javascripts/ide/components/commit_sidebar/list.vue
+++ b/app/assets/javascripts/ide/components/commit_sidebar/list.vue
@@ -1,56 +1,132 @@
 <script>
-  import { mapState } from 'vuex';
-  import icon from '~/vue_shared/components/icon.vue';
-  import listItem from './list_item.vue';
-  import listCollapsed from './list_collapsed.vue';
+import { mapActions, mapState, mapGetters } from 'vuex';
+import { __, sprintf } from '~/locale';
+import Icon from '~/vue_shared/components/icon.vue';
+import tooltip from '~/vue_shared/directives/tooltip';
+import ListItem from './list_item.vue';
+import ListCollapsed from './list_collapsed.vue';
 
-  export default {
-    components: {
-      icon,
-      listItem,
-      listCollapsed,
+export default {
+  components: {
+    Icon,
+    ListItem,
+    ListCollapsed,
+  },
+  directives: {
+    tooltip,
+  },
+  props: {
+    title: {
+      type: String,
+      required: true,
     },
-    props: {
-      title: {
-        type: String,
-        required: true,
-      },
-      fileList: {
-        type: Array,
-        required: true,
-      },
+    fileList: {
+      type: Array,
+      required: true,
     },
-    computed: {
-      ...mapState([
-        'currentProjectId',
-        'currentBranchId',
-        'rightPanelCollapsed',
-      ]),
-      isCommitInfoShown() {
-        return this.rightPanelCollapsed || this.fileList.length;
-      },
+    showToggle: {
+      type: Boolean,
+      required: false,
+      default: true,
     },
-    methods: {
-      toggleCollapsed() {
-        this.$emit('toggleCollapsed');
-      },
+    iconName: {
+      type: String,
+      required: true,
     },
-  };
+    action: {
+      type: String,
+      required: true,
+    },
+    actionBtnText: {
+      type: String,
+      required: true,
+    },
+    itemActionComponent: {
+      type: String,
+      required: true,
+    },
+    stagedList: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+  },
+  computed: {
+    ...mapState(['rightPanelCollapsed']),
+    ...mapGetters(['collapseButtonIcon', 'collapseButtonTooltip']),
+    titleText() {
+      return sprintf(__('%{title} changes'), {
+        title: this.title,
+      });
+    },
+  },
+  methods: {
+    ...mapActions(['toggleRightPanelCollapsed', 'stageAllChanges', 'unstageAllChanges']),
+    actionBtnClicked() {
+      this[this.action]();
+    },
+  },
+};
 </script>
 
 <template>
   <div
+    class="ide-commit-list-container"
     :class="{
-      'multi-file-commit-list': isCommitInfoShown
+      'is-collapsed': rightPanelCollapsed,
     }"
   >
+    <header
+      class="multi-file-commit-panel-header"
+    >
+      <div
+        v-if="!rightPanelCollapsed"
+        class="multi-file-commit-panel-header-title"
+        :class="{
+          'append-right-10': showToggle,
+        }"
+      >
+        <icon
+          v-once
+          :name="iconName"
+          :size="18"
+        />
+        {{ titleText }}
+        <button
+          type="button"
+          class="btn btn-blank btn-link ide-staged-action-btn"
+          @click="actionBtnClicked"
+        >
+          {{ actionBtnText }}
+        </button>
+      </div>
+      <button
+        v-if="showToggle"
+        v-tooltip
+        :title="collapseButtonTooltip"
+        data-container="body"
+        data-placement="left"
+        type="button"
+        class="btn btn-transparent multi-file-commit-panel-collapse-btn"
+        :aria-label="__('Toggle sidebar')"
+        @click.stop="toggleRightPanelCollapsed"
+      >
+        <icon
+          :name="collapseButtonIcon"
+          :size="18"
+        />
+      </button>
+    </header>
     <list-collapsed
       v-if="rightPanelCollapsed"
+      :files="fileList"
+      :icon-name="iconName"
+      :title="title"
     />
     <template v-else>
       <ul
         v-if="fileList.length"
-        class="list-unstyled append-bottom-0"
+        class="multi-file-commit-list list-unstyled append-bottom-0"
       >
         <li
           v-for="file in fileList"
@@ -58,9 +134,18 @@
         >
           <list-item
             :file="file"
+            :action-component="itemActionComponent"
+            :key-prefix="title"
+            :staged-list="stagedList"
           />
         </li>
       </ul>
+      <p
+        v-else
+        class="multi-file-commit-list help-block"
+      >
+        {{ __('No changes') }}
+      </p>
     </template>
   </div>
 </template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/list_collapsed.vue b/app/assets/javascripts/ide/components/commit_sidebar/list_collapsed.vue
index 15918ac9631..2254271c679 100644
--- a/app/assets/javascripts/ide/components/commit_sidebar/list_collapsed.vue
+++ b/app/assets/javascripts/ide/components/commit_sidebar/list_collapsed.vue
@@ -1,35 +1,110 @@
 <script>
-  import { mapGetters } from 'vuex';
-  import icon from '~/vue_shared/components/icon.vue';
+import Icon from '~/vue_shared/components/icon.vue';
+import tooltip from '~/vue_shared/directives/tooltip';
+import { sprintf, n__, __ } from '~/locale';
 
-  export default {
-    components: {
-      icon,
+export default {
+  components: {
+    Icon,
+  },
+  directives: {
+    tooltip,
+  },
+  props: {
+    files: {
+      type: Array,
+      required: true,
     },
-    computed: {
-      ...mapGetters([
-        'addedFiles',
-        'modifiedFiles',
-      ]),
+    iconName: {
+      type: String,
+      required: true,
     },
-  };
+    title: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    addedFilesLength() {
+      return this.files.filter(f => f.tempFile).length;
+    },
+    modifiedFilesLength() {
+      return this.files.filter(f => !f.tempFile).length;
+    },
+    addedFilesIconClass() {
+      return this.addedFilesLength ? 'multi-file-addition' : '';
+    },
+    modifiedFilesClass() {
+      return this.modifiedFilesLength ? 'multi-file-modified' : '';
+    },
+    additionsTooltip() {
+      return sprintf(n__('1 %{type} addition', '%d %{type} additions', this.addedFilesLength), {
+        type: this.title.toLowerCase(),
+      });
+    },
+    modifiedTooltip() {
+      return sprintf(
+        n__('1 %{type} modification', '%d %{type} modifications', this.modifiedFilesLength),
+        { type: this.title.toLowerCase() },
+      );
+    },
+    titleTooltip() {
+      return sprintf(__('%{title} changes'), { title: this.title });
+    },
+    additionIconName() {
+      return this.title.toLowerCase() === 'staged' ? 'file-addition-solid' : 'file-addition';
+    },
+    modifiedIconName() {
+      return this.title.toLowerCase() === 'staged' ? 'file-modified-solid' : 'file-modified';
+    },
+  },
+};
 </script>
 
 <template>
   <div
     class="multi-file-commit-list-collapsed text-center"
   >
-    <icon
-      name="file-addition"
-      :size="18"
-      css-classes="multi-file-addition append-bottom-10"
-    />
-    {{ addedFiles.length }}
-    <icon
-      name="file-modified"
-      :size="18"
-      css-classes="multi-file-modified prepend-top-10 append-bottom-10"
-    />
-    {{ modifiedFiles.length }}
+    <div
+      v-tooltip
+      :title="titleTooltip"
+      data-container="body"
+      data-placement="left"
+      class="append-bottom-15"
+    >
+      <icon
+        v-once
+        :name="iconName"
+        :size="18"
+      />
+    </div>
+    <div
+      v-tooltip
+      :title="additionsTooltip"
+      data-container="body"
+      data-placement="left"
+      class="append-bottom-10"
+    >
+      <icon
+        :name="additionIconName"
+        :size="18"
+        :css-classes="addedFilesIconClass"
+      />
+    </div>
+    {{ addedFilesLength }}
+    <div
+      v-tooltip
+      :title="modifiedTooltip"
+      data-container="body"
+      data-placement="left"
+      class="prepend-top-10 append-bottom-10"
+    >
+      <icon
+        :name="modifiedIconName"
+        :size="18"
+        :css-classes="modifiedFilesClass"
+      />
+    </div>
+    {{ modifiedFilesLength }}
   </div>
 </template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/list_item.vue b/app/assets/javascripts/ide/components/commit_sidebar/list_item.vue
index 560cdd941cd..ad4713c40d5 100644
--- a/app/assets/javascripts/ide/components/commit_sidebar/list_item.vue
+++ b/app/assets/javascripts/ide/components/commit_sidebar/list_item.vue
@@ -1,34 +1,69 @@
 <script>
 import { mapActions } from 'vuex';
 import Icon from '~/vue_shared/components/icon.vue';
+import StageButton from './stage_button.vue';
+import UnstageButton from './unstage_button.vue';
 
 export default {
   components: {
     Icon,
+    StageButton,
+    UnstageButton,
   },
   props: {
     file: {
       type: Object,
       required: true,
     },
+    actionComponent: {
+      type: String,
+      required: true,
+    },
+    keyPrefix: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    stagedList: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
   },
   computed: {
     iconName() {
-      return this.file.tempFile ? 'file-addition' : 'file-modified';
+      const prefix = this.stagedList ? '-solid' : '';
+      return this.file.tempFile ? `file-addition${prefix}` : `file-modified${prefix}`;
     },
     iconClass() {
-      return `multi-file-${this.file.tempFile ? 'addition' : 'modified'} append-right-8`;
+      return `multi-file-${this.file.tempFile ? 'additions' : 'modified'} append-right-8`;
     },
   },
   methods: {
-    ...mapActions(['discardFileChanges', 'updateViewer', 'openPendingTab']),
-    openFileInEditor(file) {
-      return this.openPendingTab(file).then(changeViewer => {
+    ...mapActions([
+      'discardFileChanges',
+      'updateViewer',
+      'openPendingTab',
+      'unstageChange',
+      'stageChange',
+    ]),
+    openFileInEditor() {
+      return this.openPendingTab({
+        file: this.file,
+        keyPrefix: this.keyPrefix.toLowerCase(),
+      }).then(changeViewer => {
         if (changeViewer) {
           this.updateViewer('diff');
         }
       });
     },
+    fileAction() {
+      if (this.file.staged) {
+        this.unstageChange(this.file.path);
+      } else {
+        this.stageChange(this.file.path);
+      }
+    },
   },
 };
 </script>
@@ -38,7 +73,9 @@ export default {
     <button
       type="button"
       class="multi-file-commit-list-path"
-      @click="openFileInEditor(file)">
+      @dblclick="fileAction"
+      @click="openFileInEditor"
+    >
       <span class="multi-file-commit-list-file-path">
         <icon
           :name="iconName"
@@ -47,12 +84,9 @@ export default {
         />{{ file.path }}
       </span>
     </button>
-    <button
-      type="button"
-      class="btn btn-blank multi-file-discard-btn"
-      @click="discardFileChanges(file.path)"
-    >
-      Discard
-    </button>
+    <component
+      :is="actionComponent"
+      :path="file.path"
+    />
   </div>
 </template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/message_field.vue b/app/assets/javascripts/ide/components/commit_sidebar/message_field.vue
new file mode 100644
index 00000000000..dcd934f76b7
--- /dev/null
+++ b/app/assets/javascripts/ide/components/commit_sidebar/message_field.vue
@@ -0,0 +1,130 @@
+<script>
+import { __, sprintf } from '../../../locale';
+import Icon from '../../../vue_shared/components/icon.vue';
+import popover from '../../../vue_shared/directives/popover';
+import { MAX_TITLE_LENGTH, MAX_BODY_LENGTH } from '../../constants';
+
+export default {
+  directives: {
+    popover,
+  },
+  components: {
+    Icon,
+  },
+  props: {
+    text: {
+      type: String,
+      required: true,
+    },
+  },
+  data() {
+    return {
+      scrollTop: 0,
+      isFocused: false,
+    };
+  },
+  computed: {
+    allLines() {
+      return this.text.split('\n').map((line, i) => ({
+        text: line.substr(0, this.getLineLength(i)) || ' ',
+        highlightedText: line.substr(this.getLineLength(i)),
+      }));
+    },
+  },
+  methods: {
+    handleScroll() {
+      if (this.$refs.textarea) {
+        this.$nextTick(() => {
+          this.scrollTop = this.$refs.textarea.scrollTop;
+        });
+      }
+    },
+    getLineLength(i) {
+      return i === 0 ? MAX_TITLE_LENGTH : MAX_BODY_LENGTH;
+    },
+    onInput(e) {
+      this.$emit('input', e.target.value);
+    },
+    updateIsFocused(isFocused) {
+      this.isFocused = isFocused;
+    },
+  },
+  popoverOptions: {
+    trigger: 'hover',
+    placement: 'top',
+    content: sprintf(
+      __(`
+        The character highligher helps you keep the subject line to %{titleLength} characters
+        and wrap the body at %{bodyLength} so they are readable in git.
+      `),
+      { titleLength: MAX_TITLE_LENGTH, bodyLength: MAX_BODY_LENGTH },
+    ),
+  },
+};
+</script>
+
+<template>
+  <fieldset class="common-note-form ide-commit-message-field">
+    <div
+      class="md-area"
+      :class="{
+        'is-focused': isFocused
+      }"
+    >
+      <div
+        v-once
+        class="md-header"
+      >
+        <ul class="nav-links">
+          <li>
+            {{ __('Commit Message') }}
+            <span
+              v-popover="$options.popoverOptions"
+              class="help-block prepend-left-10"
+            >
+              <icon
+                name="question"
+              />
+            </span>
+          </li>
+        </ul>
+      </div>
+      <div class="ide-commit-message-textarea-container">
+        <div class="ide-commit-message-highlights-container">
+          <div
+            class="note-textarea highlights monospace"
+            :style="{
+              transform: `translate3d(0, ${-scrollTop}px, 0)`
+            }"
+          >
+            <div
+              v-for="(line, index) in allLines"
+              :key="index"
+            >
+              <span
+                v-text="line.text"
+              >
+              </span><mark
+                v-show="line.highlightedText"
+                v-text="line.highlightedText"
+              >
+              </mark>
+            </div>
+          </div>
+        </div>
+        <textarea
+          class="note-textarea ide-commit-message-textarea"
+          name="commit-message"
+          :placeholder="__('Write a commit message...')"
+          :value="text"
+          @scroll="handleScroll"
+          @input="onInput"
+          @focus="updateIsFocused(true)"
+          @blur="updateIsFocused(false)"
+          ref="textarea"
+        >
+        </textarea>
+      </div>
+    </div>
+  </fieldset>
+</template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/radio_group.vue b/app/assets/javascripts/ide/components/commit_sidebar/radio_group.vue
index 4310d762c78..b660a2961cb 100644
--- a/app/assets/javascripts/ide/components/commit_sidebar/radio_group.vue
+++ b/app/assets/javascripts/ide/components/commit_sidebar/radio_group.vue
@@ -1,52 +1,40 @@
 <script>
-  import { mapActions, mapState, mapGetters } from 'vuex';
-  import tooltip from '~/vue_shared/directives/tooltip';
+import { mapActions, mapState, mapGetters } from 'vuex';
+import tooltip from '~/vue_shared/directives/tooltip';
 
-  export default {
-    directives: {
-      tooltip,
+export default {
+  directives: {
+    tooltip,
+  },
+  props: {
+    value: {
+      type: String,
+      required: true,
     },
-    props: {
-      value: {
-        type: String,
-        required: true,
-      },
-      label: {
-        type: String,
-        required: false,
-        default: null,
-      },
-      checked: {
-        type: Boolean,
-        required: false,
-        default: false,
-      },
-      showInput: {
-        type: Boolean,
-        required: false,
-        default: false,
-      },
-      helpText: {
-        type: String,
-        required: false,
-        default: null,
-      },
+    label: {
+      type: String,
+      required: false,
+      default: null,
     },
-    computed: {
-      ...mapState('commit', [
-        'commitAction',
-      ]),
-      ...mapGetters('commit', [
-        'newBranchName',
-      ]),
+    checked: {
+      type: Boolean,
+      required: false,
+      default: false,
     },
-    methods: {
-      ...mapActions('commit', [
-        'updateCommitAction',
-        'updateBranchName',
-      ]),
+    showInput: {
+      type: Boolean,
+      required: false,
+      default: false,
     },
-  };
+  },
+  computed: {
+    ...mapState('commit', ['commitAction']),
+    ...mapGetters('commit', ['newBranchName']),
+  },
+  methods: {
+    ...mapActions('commit', ['updateCommitAction', 'updateBranchName']),
+  },
+};
 </script>
 
 <template>
@@ -65,18 +53,6 @@
           {{ label }}
         </template>
         <slot v-else></slot>
-        <span
-          v-if="helpText"
-          v-tooltip
-          class="help-block inline"
-          :title="helpText"
-        >
-          <i
-            class="fa fa-question-circle"
-            aria-hidden="true"
-          >
-          </i>
-        </span>
       </span>
     </label>
     <div
@@ -85,7 +61,7 @@
     >
       <input
         type="text"
-        class="form-control"
+        class="form-control monospace"
         :placeholder="newBranchName"
         @input="updateBranchName($event.target.value)"
       />
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/stage_button.vue b/app/assets/javascripts/ide/components/commit_sidebar/stage_button.vue
new file mode 100644
index 00000000000..52dce8412ab
--- /dev/null
+++ b/app/assets/javascripts/ide/components/commit_sidebar/stage_button.vue
@@ -0,0 +1,59 @@
+<script>
+import { mapActions } from 'vuex';
+import Icon from '~/vue_shared/components/icon.vue';
+import tooltip from '~/vue_shared/directives/tooltip';
+
+export default {
+  components: {
+    Icon,
+  },
+  directives: {
+    tooltip,
+  },
+  props: {
+    path: {
+      type: String,
+      required: true,
+    },
+  },
+  methods: {
+    ...mapActions(['stageChange', 'discardFileChanges']),
+  },
+};
+</script>
+
+<template>
+  <div
+    v-once
+    class="multi-file-discard-btn"
+  >
+    <button
+      v-tooltip
+      type="button"
+      class="btn btn-blank append-right-5"
+      :aria-label="__('Stage changes')"
+      :title="__('Stage changes')"
+      data-container="body"
+      @click.stop="stageChange(path)"
+    >
+      <icon
+        name="mobile-issue-close"
+        :size="12"
+      />
+    </button>
+    <button
+      v-tooltip
+      type="button"
+      class="btn btn-blank"
+      :aria-label="__('Discard changes')"
+      :title="__('Discard changes')"
+      data-container="body"
+      @click.stop="discardFileChanges(path)"
+    >
+      <icon
+        name="remove"
+        :size="12"
+      />
+    </button>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/commit_sidebar/unstage_button.vue b/app/assets/javascripts/ide/components/commit_sidebar/unstage_button.vue
new file mode 100644
index 00000000000..123d60da47e
--- /dev/null
+++ b/app/assets/javascripts/ide/components/commit_sidebar/unstage_button.vue
@@ -0,0 +1,45 @@
+<script>
+import { mapActions } from 'vuex';
+import Icon from '~/vue_shared/components/icon.vue';
+import tooltip from '~/vue_shared/directives/tooltip';
+
+export default {
+  components: {
+    Icon,
+  },
+  directives: {
+    tooltip,
+  },
+  props: {
+    path: {
+      type: String,
+      required: true,
+    },
+  },
+  methods: {
+    ...mapActions(['unstageChange']),
+  },
+};
+</script>
+
+<template>
+  <div
+    v-once
+    class="multi-file-discard-btn"
+  >
+    <button
+      v-tooltip
+      type="button"
+      class="btn btn-blank"
+      :aria-label="__('Unstage changes')"
+      :title="__('Unstage changes')"
+      data-container="body"
+      @click="unstageChange(path)"
+    >
+      <icon
+        name="history"
+        :size="12"
+      />
+    </button>
+  </div>
+</template>
diff --git a/app/assets/javascripts/ide/components/ide_context_bar.vue b/app/assets/javascripts/ide/components/ide_context_bar.vue
index 79a83b47994..627fbeb9adf 100644
--- a/app/assets/javascripts/ide/components/ide_context_bar.vue
+++ b/app/assets/javascripts/ide/components/ide_context_bar.vue
@@ -1,5 +1,4 @@
 <script>
-import { mapActions, mapGetters, mapState } from 'vuex';
 import icon from '~/vue_shared/components/icon.vue';
 import panelResizer from '~/vue_shared/components/panel_resizer.vue';
 import repoCommitSection from './repo_commit_section.vue';
@@ -22,13 +21,6 @@ export default {
       required: true,
     },
   },
-  computed: {
-    ...mapState(['changedFiles', 'rightPanelCollapsed']),
-    ...mapGetters(['currentIcon']),
-  },
-  methods: {
-    ...mapActions(['setPanelCollapsedStatus']),
-  },
 };
 </script>
 
@@ -41,40 +33,6 @@ export default {
     <div
       class="multi-file-commit-panel-section"
     >
-      <header
-        class="multi-file-commit-panel-header"
-        :class="{
-          'is-collapsed': rightPanelCollapsed,
-        }"
-      >
-        <div
-          class="multi-file-commit-panel-header-title"
-          v-if="!rightPanelCollapsed"
-        >
-          <div
-            v-if="changedFiles.length"
-          >
-            <icon
-              name="list-bulleted"
-              :size="18"
-            />
-            Staged
-          </div>
-        </div>
-        <button
-          type="button"
-          class="btn btn-transparent multi-file-commit-panel-collapse-btn"
-          @click.stop="setPanelCollapsedStatus({
-            side: 'right',
-            collapsed: !rightPanelCollapsed,
-          })"
-        >
-          <icon
-            :name="currentIcon"
-            :size="18"
-          />
-        </button>
-      </header>
       <repo-commit-section
         :no-changes-state-svg-path="noChangesStateSvgPath"
         :committed-state-svg-path="committedStateSvgPath"
diff --git a/app/assets/javascripts/ide/components/ide_status_bar.vue b/app/assets/javascripts/ide/components/ide_status_bar.vue
index 152a5f632ad..c13eeeace3f 100644
--- a/app/assets/javascripts/ide/components/ide_status_bar.vue
+++ b/app/assets/javascripts/ide/components/ide_status_bar.vue
@@ -22,13 +22,6 @@ export default {
 
 <template>
   <div class="ide-status-bar">
-    <div class="ref-name">
-      <icon
-        name="branch"
-        :size="12"
-      />
-      {{ file.branchId }}
-    </div>
     <div>
       <div v-if="file.lastCommit && file.lastCommit.id">
         Last commit:
diff --git a/app/assets/javascripts/ide/components/repo_commit_section.vue b/app/assets/javascripts/ide/components/repo_commit_section.vue
index d885ed5e301..877d1b5e026 100644
--- a/app/assets/javascripts/ide/components/repo_commit_section.vue
+++ b/app/assets/javascripts/ide/components/repo_commit_section.vue
@@ -1,20 +1,24 @@
 <script>
 import { mapState, mapActions, mapGetters } from 'vuex';
 import tooltip from '~/vue_shared/directives/tooltip';
-import icon from '~/vue_shared/components/icon.vue';
+import Icon from '~/vue_shared/components/icon.vue';
 import DeprecatedModal from '~/vue_shared/components/deprecated_modal.vue';
 import LoadingButton from '~/vue_shared/components/loading_button.vue';
-import commitFilesList from './commit_sidebar/list.vue';
+import CommitFilesList from './commit_sidebar/list.vue';
+import EmptyState from './commit_sidebar/empty_state.vue';
+import CommitMessageField from './commit_sidebar/message_field.vue';
 import * as consts from '../stores/modules/commit/constants';
 import Actions from './commit_sidebar/actions.vue';
 
 export default {
   components: {
     DeprecatedModal,
-    icon,
-    commitFilesList,
+    Icon,
+    CommitFilesList,
+    EmptyState,
     Actions,
     LoadingButton,
+    CommitMessageField,
   },
   directives: {
     tooltip,
@@ -30,43 +34,19 @@ export default {
     },
   },
   computed: {
-    ...mapState([
-      'currentProjectId',
-      'currentBranchId',
-      'rightPanelCollapsed',
-      'lastCommitMsg',
-      'changedFiles',
-    ]),
+    ...mapState(['changedFiles', 'stagedFiles', 'rightPanelCollapsed']),
     ...mapState('commit', ['commitMessage', 'submitCommitLoading']),
-    ...mapGetters('commit', [
-      'commitButtonDisabled',
-      'discardDraftButtonDisabled',
-      'branchName',
-    ]),
-    statusSvg() {
-      return this.lastCommitMsg
-        ? this.committedStateSvgPath
-        : this.noChangesStateSvgPath;
-    },
+    ...mapGetters('commit', ['commitButtonDisabled', 'discardDraftButtonDisabled', 'branchName']),
   },
   methods: {
-    ...mapActions(['setPanelCollapsedStatus']),
     ...mapActions('commit', [
       'updateCommitMessage',
       'discardDraft',
       'commitChanges',
       'updateCommitAction',
     ]),
-    toggleCollapsed() {
-      this.setPanelCollapsedStatus({
-        side: 'right',
-        collapsed: !this.rightPanelCollapsed,
-      });
-    },
     forceCreateNewBranch() {
-      return this.updateCommitAction(consts.COMMIT_TO_NEW_BRANCH).then(() =>
-        this.commitChanges(),
-      );
+      return this.updateCommitAction(consts.COMMIT_TO_NEW_BRANCH).then(() => this.commitChanges());
     },
   },
 };
@@ -75,9 +55,6 @@ export default {
 <template>
   <div
     class="multi-file-commit-panel-section"
-    :class="{
-      'multi-file-commit-empty-state-container': !changedFiles.length
-    }"
   >
     <deprecated-modal
       id="ide-create-branch-modal"
@@ -91,30 +68,36 @@ export default {
           Would you like to create a new branch?`) }}
       </template>
     </deprecated-modal>
-    <commit-files-list
-      title="Staged"
-      :file-list="changedFiles"
-      :collapsed="rightPanelCollapsed"
-      @toggleCollapsed="toggleCollapsed"
-    />
     <template
-      v-if="changedFiles.length"
+      v-if="changedFiles.length || stagedFiles.length"
     >
+      <commit-files-list
+        icon-name="unstaged"
+        :title="__('Unstaged')"
+        :file-list="changedFiles"
+        action="stageAllChanges"
+        :action-btn-text="__('Stage all')"
+        item-action-component="stage-button"
+      />
+      <commit-files-list
+        icon-name="staged"
+        :title="__('Staged')"
+        :file-list="stagedFiles"
+        action="unstageAllChanges"
+        :action-btn-text="__('Unstage all')"
+        item-action-component="unstage-button"
+        :show-toggle="false"
+        :staged-list="true"
+      />
       <form
         class="form-horizontal multi-file-commit-form"
         @submit.prevent.stop="commitChanges"
         v-if="!rightPanelCollapsed"
       >
-        <div class="multi-file-commit-fieldset">
-          <textarea
-            class="form-control multi-file-commit-message"
-            name="commit-message"
-            :value="commitMessage"
-            :placeholder="__('Write a commit message...')"
-            @input="updateCommitMessage($event.target.value)"
-          >
-          </textarea>
-        </div>
+        <commit-message-field
+          :text="commitMessage"
+          @input="updateCommitMessage"
+        />
         <div class="clearfix prepend-top-15">
           <actions />
           <loading-button
@@ -135,38 +118,10 @@ export default {
         </div>
       </form>
     </template>
-    <div
-      v-else-if="!rightPanelCollapsed"
-      class="row js-empty-state"
-    >
-      <div class="col-xs-10 col-xs-offset-1">
-        <div class="svg-content svg-80">
-          <img :src="statusSvg" />
-        </div>
-      </div>
-      <div class="col-xs-10 col-xs-offset-1">
-        <div
-          class="text-content text-center"
-          v-if="!lastCommitMsg"
-        >
-          <h4>
-            {{ __('No changes') }}
-          </h4>
-          <p>
-            {{ __('Edit files in the editor and commit changes here') }}
-          </p>
-        </div>
-        <div
-          class="text-content text-center"
-          v-else
-        >
-          <h4>
-            {{ __('All changes are committed') }}
-          </h4>
-          <p v-html="lastCommitMsg">
-          </p>
-        </div>
-      </div>
-    </div>
+    <empty-state
+      v-else
+      :no-changes-state-svg-path="noChangesStateSvgPath"
+      :committed-state-svg-path="committedStateSvgPath"
+    />
   </div>
 </template>
diff --git a/app/assets/javascripts/ide/components/repo_editor.vue b/app/assets/javascripts/ide/components/repo_editor.vue
index 711bafa17a9..3a04cdd8e46 100644
--- a/app/assets/javascripts/ide/components/repo_editor.vue
+++ b/app/assets/javascripts/ide/components/repo_editor.vue
@@ -20,7 +20,7 @@ export default {
   },
   computed: {
     ...mapState(['rightPanelCollapsed', 'viewer', 'delayViewerUpdated', 'panelResizing']),
-    ...mapGetters(['currentMergeRequest']),
+    ...mapGetters(['currentMergeRequest', 'getStagedFile']),
     shouldHideEditor() {
       return this.file && this.file.binary && !this.file.content;
     },
@@ -120,7 +120,12 @@ export default {
     setupEditor() {
       if (!this.file || !this.editor.instance) return;
 
-      this.model = this.editor.createModel(this.file);
+      const head = this.getStagedFile(this.file.path);
+
+      this.model = this.editor.createModel(
+        this.file,
+        this.file.staged && this.file.key.indexOf('unstaged-') === 0 ? head : null,
+      );
 
       if (this.viewer === 'mrdiff') {
         this.editor.attachMergeRequestModel(this.model);
diff --git a/app/assets/javascripts/ide/components/repo_file.vue b/app/assets/javascripts/ide/components/repo_file.vue
index 3b5068d4910..8b18c7d28b4 100644
--- a/app/assets/javascripts/ide/components/repo_file.vue
+++ b/app/assets/javascripts/ide/components/repo_file.vue
@@ -102,8 +102,11 @@ export default {
             v-if="file.mrChange"
           />
           <changed-file-icon
+            v-if="file.changed || file.tempFile || file.staged"
             :file="file"
-            v-if="file.changed || file.tempFile"
+            :show-tooltip="true"
+            :show-staged-icon="true"
+            class="prepend-top-5 pull-right"
           />
         </span>
         <new-dropdown
diff --git a/app/assets/javascripts/ide/components/repo_tab.vue b/app/assets/javascripts/ide/components/repo_tab.vue
index 304a73ed1ad..35a362b01e0 100644
--- a/app/assets/javascripts/ide/components/repo_tab.vue
+++ b/app/assets/javascripts/ide/components/repo_tab.vue
@@ -26,13 +26,16 @@ export default {
   },
   computed: {
     closeLabel() {
-      if (this.tab.changed || this.tab.tempFile) {
+      if (this.fileHasChanged) {
         return `${this.tab.name} changed`;
       }
       return `Close ${this.tab.name}`;
     },
     showChangedIcon() {
-      return this.tab.changed ? !this.tabMouseOver : false;
+      return this.fileHasChanged ? !this.tabMouseOver : false;
+    },
+    fileHasChanged() {
+      return this.tab.changed || this.tab.tempFile || this.tab.staged;
     },
   },
 
@@ -42,18 +45,18 @@ export default {
       this.updateDelayViewerUpdated(true);
 
       if (tab.pending) {
-        this.openPendingTab(tab);
+        this.openPendingTab({ file: tab, keyPrefix: tab.staged ? 'staged' : 'unstaged' });
       } else {
         this.$router.push(`/project${tab.url}`);
       }
     },
     mouseOverTab() {
-      if (this.tab.changed) {
+      if (this.fileHasChanged) {
         this.tabMouseOver = true;
       }
     },
     mouseOutTab() {
-      if (this.tab.changed) {
+      if (this.fileHasChanged) {
         this.tabMouseOver = false;
       }
     },
diff --git a/app/assets/javascripts/ide/constants.js b/app/assets/javascripts/ide/constants.js
new file mode 100644
index 00000000000..b60d042e0be
--- /dev/null
+++ b/app/assets/javascripts/ide/constants.js
@@ -0,0 +1,3 @@
+// Fuzzy file finder
+export const MAX_TITLE_LENGTH = 50;
+export const MAX_BODY_LENGTH = 72;
diff --git a/app/assets/javascripts/ide/ide_router.js b/app/assets/javascripts/ide/ide_router.js
index 20983666b4a..4a0a303d5a6 100644
--- a/app/assets/javascripts/ide/ide_router.js
+++ b/app/assets/javascripts/ide/ide_router.js
@@ -36,11 +36,11 @@ const router = new VueRouter({
   base: `${gon.relative_url_root}/-/ide/`,
   routes: [
     {
-      path: '/project/:namespace/:project',
+      path: '/project/:namespace/:project+',
       component: EmptyRouterComponent,
       children: [
         {
-          path: ':targetmode/:branch/*',
+          path: ':targetmode(edit|tree|blob)/:branch/*',
           component: EmptyRouterComponent,
         },
         {
diff --git a/app/assets/javascripts/ide/lib/common/model.js b/app/assets/javascripts/ide/lib/common/model.js
index e47adae99ed..016dcda1fa1 100644
--- a/app/assets/javascripts/ide/lib/common/model.js
+++ b/app/assets/javascripts/ide/lib/common/model.js
@@ -3,15 +3,16 @@ import Disposable from './disposable';
 import eventHub from '../../eventhub';
 
 export default class Model {
-  constructor(monaco, file) {
+  constructor(monaco, file, head = null) {
     this.monaco = monaco;
     this.disposable = new Disposable();
     this.file = file;
+    this.head = head;
     this.content = file.content !== '' ? file.content : file.raw;
 
     this.disposable.add(
       (this.originalModel = this.monaco.editor.createModel(
-        this.file.raw,
+        head ? head.content : this.file.raw,
         undefined,
         new this.monaco.Uri(null, null, `original/${this.file.key}`),
       )),
@@ -31,13 +32,15 @@ export default class Model {
       );
     }
 
-    this.events = new Map();
+    this.events = new Set();
 
     this.updateContent = this.updateContent.bind(this);
+    this.updateNewContent = this.updateNewContent.bind(this);
     this.dispose = this.dispose.bind(this);
 
     eventHub.$on(`editor.update.model.dispose.${this.file.key}`, this.dispose);
-    eventHub.$on(`editor.update.model.content.${this.file.path}`, this.updateContent);
+    eventHub.$on(`editor.update.model.content.${this.file.key}`, this.updateContent);
+    eventHub.$on(`editor.update.model.new.content.${this.file.key}`, this.updateNewContent);
   }
 
   get url() {
@@ -73,22 +76,36 @@ export default class Model {
   }
 
   onChange(cb) {
-    this.events.set(
-      this.path,
-      this.disposable.add(this.model.onDidChangeContent(e => cb(this, e))),
-    );
+    this.events.add(this.disposable.add(this.model.onDidChangeContent(e => cb(this, e))));
+  }
+
+  onDispose(cb) {
+    this.events.add(cb);
   }
 
-  updateContent(content) {
+  updateContent({ content, changed }) {
     this.getOriginalModel().setValue(content);
+
+    if (!changed) {
+      this.getModel().setValue(content);
+    }
+  }
+
+  updateNewContent(content) {
     this.getModel().setValue(content);
   }
 
   dispose() {
     this.disposable.dispose();
+
+    this.events.forEach(cb => {
+      if (typeof cb === 'function') cb();
+    });
+
     this.events.clear();
 
     eventHub.$off(`editor.update.model.dispose.${this.file.key}`, this.dispose);
-    eventHub.$off(`editor.update.model.content.${this.file.path}`, this.updateContent);
+    eventHub.$off(`editor.update.model.content.${this.file.key}`, this.updateContent);
+    eventHub.$off(`editor.update.model.new.content.${this.file.key}`, this.updateNewContent);
   }
 }
diff --git a/app/assets/javascripts/ide/lib/common/model_manager.js b/app/assets/javascripts/ide/lib/common/model_manager.js
index 0e7b563b5d6..7f643969480 100644
--- a/app/assets/javascripts/ide/lib/common/model_manager.js
+++ b/app/assets/javascripts/ide/lib/common/model_manager.js
@@ -17,12 +17,12 @@ export default class ModelManager {
     return this.models.get(key);
   }
 
-  addModel(file) {
+  addModel(file, head = null) {
     if (this.hasCachedModel(file.key)) {
       return this.getModel(file.key);
     }
 
-    const model = new Model(this.monaco, file);
+    const model = new Model(this.monaco, file, head);
     this.models.set(model.path, model);
     this.disposable.add(model);
 
diff --git a/app/assets/javascripts/ide/lib/decorations/controller.js b/app/assets/javascripts/ide/lib/decorations/controller.js
index 42904774747..13d477bb2cf 100644
--- a/app/assets/javascripts/ide/lib/decorations/controller.js
+++ b/app/assets/javascripts/ide/lib/decorations/controller.js
@@ -38,6 +38,15 @@ export default class DecorationsController {
     );
   }
 
+  hasDecorations(model) {
+    return this.decorations.has(model.url);
+  }
+
+  removeDecorations(model) {
+    this.decorations.delete(model.url);
+    this.editorDecorations.delete(model.url);
+  }
+
   dispose() {
     this.decorations.clear();
     this.editorDecorations.clear();
diff --git a/app/assets/javascripts/ide/lib/diff/controller.js b/app/assets/javascripts/ide/lib/diff/controller.js
index b136545ad11..f579424cf33 100644
--- a/app/assets/javascripts/ide/lib/diff/controller.js
+++ b/app/assets/javascripts/ide/lib/diff/controller.js
@@ -3,7 +3,7 @@ import { throttle } from 'underscore';
 import DirtyDiffWorker from './diff_worker';
 import Disposable from '../common/disposable';
 
-export const getDiffChangeType = (change) => {
+export const getDiffChangeType = change => {
   if (change.modified) {
     return 'modified';
   } else if (change.added) {
@@ -16,12 +16,7 @@ export const getDiffChangeType = (change) => {
 };
 
 export const getDecorator = change => ({
-  range: new monaco.Range(
-    change.lineNumber,
-    1,
-    change.endLineNumber,
-    1,
-  ),
+  range: new monaco.Range(change.lineNumber, 1, change.endLineNumber, 1),
   options: {
     isWholeLine: true,
     linesDecorationsClassName: `dirty-diff dirty-diff-${getDiffChangeType(change)}`,
@@ -31,6 +26,7 @@ export const getDecorator = change => ({
 export default class DirtyDiffController {
   constructor(modelManager, decorationsController) {
     this.disposable = new Disposable();
+    this.models = new Map();
     this.editorSimpleWorker = null;
     this.modelManager = modelManager;
     this.decorationsController = decorationsController;
@@ -42,7 +38,15 @@ export default class DirtyDiffController {
   }
 
   attachModel(model) {
+    if (this.models.has(model.url)) return;
+
     model.onChange(() => this.throttledComputeDiff(model));
+    model.onDispose(() => {
+      this.decorationsController.removeDecorations(model);
+      this.models.delete(model.url);
+    });
+
+    this.models.set(model.url, model);
   }
 
   computeDiff(model) {
@@ -54,7 +58,11 @@ export default class DirtyDiffController {
   }
 
   reDecorate(model) {
-    this.decorationsController.decorate(model);
+    if (this.decorationsController.hasDecorations(model)) {
+      this.decorationsController.decorate(model);
+    } else {
+      this.computeDiff(model);
+    }
   }
 
   decorate({ data }) {
@@ -65,6 +73,7 @@ export default class DirtyDiffController {
 
   dispose() {
     this.disposable.dispose();
+    this.models.clear();
 
     this.dirtyDiffWorker.removeEventListener('message', this.decorate);
     this.dirtyDiffWorker.terminate();
diff --git a/app/assets/javascripts/ide/lib/editor.js b/app/assets/javascripts/ide/lib/editor.js
index 001737d6ee8..2d3ee7d4f48 100644
--- a/app/assets/javascripts/ide/lib/editor.js
+++ b/app/assets/javascripts/ide/lib/editor.js
@@ -77,8 +77,8 @@ export default class Editor {
     }
   }
 
-  createModel(file) {
-    return this.modelManager.addModel(file);
+  createModel(file, head = null) {
+    return this.modelManager.addModel(file, head);
   }
 
   attachModel(model) {
diff --git a/app/assets/javascripts/ide/stores/actions.js b/app/assets/javascripts/ide/stores/actions.js
index c6ba679d99c..cecb4d215ba 100644
--- a/app/assets/javascripts/ide/stores/actions.js
+++ b/app/assets/javascripts/ide/stores/actions.js
@@ -1,3 +1,4 @@
+import $ from 'jquery';
 import Vue from 'vue';
 import { visitUrl } from '~/lib/utils/url_utility';
 import flash from '~/flash';
@@ -32,6 +33,22 @@ export const setPanelCollapsedStatus = ({ commit }, { side, collapsed }) => {
   }
 };
 
+export const toggleRightPanelCollapsed = (
+  { dispatch, state },
+  e = undefined,
+) => {
+  if (e) {
+    $(e.currentTarget)
+      .tooltip('hide')
+      .blur();
+  }
+
+  dispatch('setPanelCollapsedStatus', {
+    side: 'right',
+    collapsed: !state.rightPanelCollapsed,
+  });
+};
+
 export const setResizingStatus = ({ commit }, resizing) => {
   commit(types.SET_RESIZING_STATUS, resizing);
 };
@@ -104,6 +121,14 @@ export const scrollToTab = () => {
   });
 };
 
+export const stageAllChanges = ({ state, commit }) => {
+  state.changedFiles.forEach(file => commit(types.STAGE_CHANGE, file.path));
+};
+
+export const unstageAllChanges = ({ state, commit }) => {
+  state.stagedFiles.forEach(file => commit(types.UNSTAGE_CHANGE, file.path));
+};
+
 export const updateViewer = ({ commit }, viewer) => {
   commit(types.UPDATE_VIEWER, viewer);
 };
diff --git a/app/assets/javascripts/ide/stores/actions/file.js b/app/assets/javascripts/ide/stores/actions/file.js
index 1a17320a1ea..d782e0a84d2 100644
--- a/app/assets/javascripts/ide/stores/actions/file.js
+++ b/app/assets/javascripts/ide/stores/actions/file.js
@@ -24,7 +24,10 @@ export const closeFile = ({ commit, state, dispatch }, file) => {
 
     if (nextFileToOpen.pending) {
       dispatch('updateViewer', 'diff');
-      dispatch('openPendingTab', nextFileToOpen);
+      dispatch('openPendingTab', {
+        file: nextFileToOpen,
+        keyPrefix: nextFileToOpen.staged ? 'staged' : 'unstaged',
+      });
     } else {
       dispatch('updateDelayViewerUpdated', true);
       router.push(`/project${nextFileToOpen.url}`);
@@ -153,7 +156,7 @@ export const setFileViewMode = ({ state, commit }, { file, viewMode }) => {
   commit(types.SET_FILE_VIEWMODE, { file, viewMode });
 };
 
-export const discardFileChanges = ({ state, commit }, path) => {
+export const discardFileChanges = ({ dispatch, state, commit, getters }, path) => {
   const file = state.entries[path];
 
   commit(types.DISCARD_FILE_CHANGES, path);
@@ -161,17 +164,40 @@ export const discardFileChanges = ({ state, commit }, path) => {
 
   if (file.tempFile && file.opened) {
     commit(types.TOGGLE_FILE_OPEN, path);
+  } else if (getters.activeFile && file.path === getters.activeFile.path) {
+    dispatch('updateDelayViewerUpdated', true)
+      .then(() => {
+        router.push(`/project${file.url}`);
+      })
+      .catch(e => {
+        throw e;
+      });
+  }
+
+  eventHub.$emit(`editor.update.model.new.content.${file.key}`, file.content);
+  eventHub.$emit(`editor.update.model.dispose.unstaged-${file.key}`, file.content);
+};
+
+export const stageChange = ({ commit, state }, path) => {
+  const stagedFile = state.stagedFiles.find(f => f.path === path);
+
+  commit(types.STAGE_CHANGE, path);
+
+  if (stagedFile) {
+    eventHub.$emit(`editor.update.model.new.content.staged-${stagedFile.key}`, stagedFile.content);
   }
+};
 
-  eventHub.$emit(`editor.update.model.content.${file.path}`, file.raw);
+export const unstageChange = ({ commit }, path) => {
+  commit(types.UNSTAGE_CHANGE, path);
 };
 
-export const openPendingTab = ({ commit, getters, dispatch, state }, file) => {
-  if (getters.activeFile && getters.activeFile.path === file.path && state.viewer === 'diff') {
+export const openPendingTab = ({ commit, getters, dispatch, state }, { file, keyPrefix }) => {
+  if (getters.activeFile && getters.activeFile === file && state.viewer === 'diff') {
     return false;
   }
 
-  commit(types.ADD_PENDING_TAB, { file });
+  commit(types.ADD_PENDING_TAB, { file, keyPrefix });
 
   dispatch('scrollToTab');
 
diff --git a/app/assets/javascripts/ide/stores/actions/project.js b/app/assets/javascripts/ide/stores/actions/project.js
index b3882cb8d21..4eb23b2ee0f 100644
--- a/app/assets/javascripts/ide/stores/actions/project.js
+++ b/app/assets/javascripts/ide/stores/actions/project.js
@@ -5,45 +5,71 @@ import * as types from '../mutation_types';
 export const getProjectData = (
   { commit, state, dispatch },
   { namespace, projectId, force = false } = {},
-) => new Promise((resolve, reject) => {
-  if (!state.projects[`${namespace}/${projectId}`] || force) {
-    commit(types.TOGGLE_LOADING, { entry: state });
-    service.getProjectData(namespace, projectId)
-    .then(res => res.data)
-    .then((data) => {
+) =>
+  new Promise((resolve, reject) => {
+    if (!state.projects[`${namespace}/${projectId}`] || force) {
       commit(types.TOGGLE_LOADING, { entry: state });
-      commit(types.SET_PROJECT, { projectPath: `${namespace}/${projectId}`, project: data });
-      if (!state.currentProjectId) commit(types.SET_CURRENT_PROJECT, `${namespace}/${projectId}`);
-      resolve(data);
-    })
-    .catch(() => {
-      flash('Error loading project data. Please try again.', 'alert', document, null, false, true);
-      reject(new Error(`Project not loaded ${namespace}/${projectId}`));
-    });
-  } else {
-    resolve(state.projects[`${namespace}/${projectId}`]);
-  }
-});
+      service
+        .getProjectData(namespace, projectId)
+        .then(res => res.data)
+        .then(data => {
+          commit(types.TOGGLE_LOADING, { entry: state });
+          commit(types.SET_PROJECT, { projectPath: `${namespace}/${projectId}`, project: data });
+          if (!state.currentProjectId)
+            commit(types.SET_CURRENT_PROJECT, `${namespace}/${projectId}`);
+          resolve(data);
+        })
+        .catch(() => {
+          flash(
+            'Error loading project data. Please try again.',
+            'alert',
+            document,
+            null,
+            false,
+            true,
+          );
+          reject(new Error(`Project not loaded ${namespace}/${projectId}`));
+        });
+    } else {
+      resolve(state.projects[`${namespace}/${projectId}`]);
+    }
+  });
 
 export const getBranchData = (
   { commit, state, dispatch },
   { projectId, branchId, force = false } = {},
-) => new Promise((resolve, reject) => {
-  if ((typeof state.projects[`${projectId}`] === 'undefined' ||
-        !state.projects[`${projectId}`].branches[branchId])
-        || force) {
-    service.getBranchData(`${projectId}`, branchId)
-      .then(({ data }) => {
-        const { id } = data.commit;
-        commit(types.SET_BRANCH, { projectPath: `${projectId}`, branchName: branchId, branch: data });
-        commit(types.SET_BRANCH_WORKING_REFERENCE, { projectId, branchId, reference: id });
-        resolve(data);
-      })
-      .catch(() => {
-        flash('Error loading branch data. Please try again.', 'alert', document, null, false, true);
-        reject(new Error(`Branch not loaded - ${projectId}/${branchId}`));
-      });
-  } else {
-    resolve(state.projects[`${projectId}`].branches[branchId]);
-  }
-});
+) =>
+  new Promise((resolve, reject) => {
+    if (
+      typeof state.projects[`${projectId}`] === 'undefined' ||
+      !state.projects[`${projectId}`].branches[branchId] ||
+      force
+    ) {
+      service
+        .getBranchData(`${projectId}`, branchId)
+        .then(({ data }) => {
+          const { id } = data.commit;
+          commit(types.SET_BRANCH, {
+            projectPath: `${projectId}`,
+            branchName: branchId,
+            branch: data,
+          });
+          commit(types.SET_BRANCH_WORKING_REFERENCE, { projectId, branchId, reference: id });
+          commit(types.SET_CURRENT_BRANCH, branchId);
+          resolve(data);
+        })
+        .catch(() => {
+          flash(
+            'Error loading branch data. Please try again.',
+            'alert',
+            document,
+            null,
+            false,
+            true,
+          );
+          reject(new Error(`Branch not loaded - ${projectId}/${branchId}`));
+        });
+    } else {
+      resolve(state.projects[`${projectId}`].branches[branchId]);
+    }
+  });
diff --git a/app/assets/javascripts/ide/stores/getters.js b/app/assets/javascripts/ide/stores/getters.js
index a77cdbc13c8..8518d2f6f06 100644
--- a/app/assets/javascripts/ide/stores/getters.js
+++ b/app/assets/javascripts/ide/stores/getters.js
@@ -1,3 +1,5 @@
+import { __ } from '~/locale';
+
 export const activeFile = state => state.openFiles.find(file => file.active) || null;
 
 export const addedFiles = state => state.changedFiles.filter(f => f.tempFile);
@@ -29,9 +31,15 @@ export const currentMergeRequest = state => {
 };
 
 // eslint-disable-next-line no-confusing-arrow
-export const currentIcon = state =>
+export const collapseButtonIcon = state =>
   state.rightPanelCollapsed ? 'angle-double-left' : 'angle-double-right';
 
-export const hasChanges = state => !!state.changedFiles.length;
+export const hasChanges = state => !!state.changedFiles.length || !!state.stagedFiles.length;
+
+// eslint-disable-next-line no-confusing-arrow
+export const collapseButtonTooltip = state =>
+  state.rightPanelCollapsed ? __('Expand sidebar') : __('Collapse sidebar');
 
 export const hasMergeRequest = state => !!state.currentMergeRequestId;
+
+export const getStagedFile = state => path => state.stagedFiles.find(f => f.path === path);
diff --git a/app/assets/javascripts/ide/stores/modules/commit/actions.js b/app/assets/javascripts/ide/stores/modules/commit/actions.js
index 367c45f7e2d..b26512e213a 100644
--- a/app/assets/javascripts/ide/stores/modules/commit/actions.js
+++ b/app/assets/javascripts/ide/stores/modules/commit/actions.js
@@ -98,40 +98,25 @@ export const updateFilesAfterCommit = (
     { root: true },
   );
 
-  rootState.changedFiles.forEach(entry => {
-    commit(
-      rootTypes.SET_LAST_COMMIT_DATA,
-      {
-        entry,
-        lastCommit,
-      },
-      { root: true },
-    );
-
-    eventHub.$emit(`editor.update.model.content.${entry.path}`, entry.content);
+  rootState.stagedFiles.forEach(file => {
+    const changedFile = rootState.changedFiles.find(f => f.path === file.path);
 
     commit(
-      rootTypes.SET_FILE_RAW_DATA,
+      rootTypes.UPDATE_FILE_AFTER_COMMIT,
       {
-        file: entry,
-        raw: entry.content,
+        file,
+        lastCommit,
       },
       { root: true },
     );
 
-    commit(
-      rootTypes.TOGGLE_FILE_CHANGED,
-      {
-        file: entry,
-        changed: false,
-      },
-      { root: true },
-    );
+    eventHub.$emit(`editor.update.model.content.${file.key}`, {
+      content: file.content,
+      changed: !!changedFile,
+    });
   });
 
-  commit(rootTypes.REMOVE_ALL_CHANGES_FILES, null, { root: true });
-
-  if (state.commitAction === consts.COMMIT_TO_NEW_BRANCH) {
+  if (state.commitAction === consts.COMMIT_TO_NEW_BRANCH && rootGetters.activeFile) {
     router.push(
       `/project/${rootState.currentProjectId}/blob/${branch}/${rootGetters.activeFile.path}`,
     );
@@ -184,6 +169,8 @@ export const commitChanges = ({ commit, state, getters, dispatch, rootState }) =
               { root: true },
             );
           }
+
+          commit(rootTypes.CLEAR_STAGED_CHANGES, null, { root: true });
         })
         .then(() => dispatch('updateCommitAction', consts.COMMIT_TO_CURRENT_BRANCH));
     })
diff --git a/app/assets/javascripts/ide/stores/modules/commit/getters.js b/app/assets/javascripts/ide/stores/modules/commit/getters.js
index f7cdd6adb0c..9c3905a0b0d 100644
--- a/app/assets/javascripts/ide/stores/modules/commit/getters.js
+++ b/app/assets/javascripts/ide/stores/modules/commit/getters.js
@@ -1,12 +1,17 @@
 import * as consts from './constants';
 
-export const discardDraftButtonDisabled = state => state.commitMessage === '' || state.submitCommitLoading;
+const BRANCH_SUFFIX_COUNT = 5;
+
+export const discardDraftButtonDisabled = state =>
+  state.commitMessage === '' || state.submitCommitLoading;
 
 export const commitButtonDisabled = (state, getters, rootState) =>
-  getters.discardDraftButtonDisabled || !rootState.changedFiles.length;
+  getters.discardDraftButtonDisabled || !rootState.stagedFiles.length;
 
 export const newBranchName = (state, _, rootState) =>
-  `${gon.current_username}-${rootState.currentBranchId}-patch-${`${new Date().getTime()}`.substr(-5)}`;
+  `${gon.current_username}-${rootState.currentBranchId}-patch-${`${new Date().getTime()}`.substr(
+    -BRANCH_SUFFIX_COUNT,
+  )}`;
 
 export const branchName = (state, getters, rootState) => {
   if (
diff --git a/app/assets/javascripts/ide/stores/mutation_types.js b/app/assets/javascripts/ide/stores/mutation_types.js
index e3f504e5ab0..f5f95b755c8 100644
--- a/app/assets/javascripts/ide/stores/mutation_types.js
+++ b/app/assets/javascripts/ide/stores/mutation_types.js
@@ -51,5 +51,10 @@ export const SET_FILE_MERGE_REQUEST_CHANGE = 'SET_FILE_MERGE_REQUEST_CHANGE';
 export const UPDATE_VIEWER = 'UPDATE_VIEWER';
 export const UPDATE_DELAY_VIEWER_CHANGE = 'UPDATE_DELAY_VIEWER_CHANGE';
 
+export const CLEAR_STAGED_CHANGES = 'CLEAR_STAGED_CHANGES';
+export const STAGE_CHANGE = 'STAGE_CHANGE';
+export const UNSTAGE_CHANGE = 'UNSTAGE_CHANGE';
+
+export const UPDATE_FILE_AFTER_COMMIT = 'UPDATE_FILE_AFTER_COMMIT';
 export const ADD_PENDING_TAB = 'ADD_PENDING_TAB';
 export const REMOVE_PENDING_TAB = 'REMOVE_PENDING_TAB';
diff --git a/app/assets/javascripts/ide/stores/mutations.js b/app/assets/javascripts/ide/stores/mutations.js
index 5e5eb831662..fbe342f9126 100644
--- a/app/assets/javascripts/ide/stores/mutations.js
+++ b/app/assets/javascripts/ide/stores/mutations.js
@@ -49,6 +49,11 @@ export default {
       lastCommitMsg,
     });
   },
+  [types.CLEAR_STAGED_CHANGES](state) {
+    Object.assign(state, {
+      stagedFiles: [],
+    });
+  },
   [types.SET_ENTRIES](state, entries) {
     Object.assign(state, {
       entries,
@@ -95,6 +100,22 @@ export default {
       delayViewerUpdated,
     });
   },
+  [types.UPDATE_FILE_AFTER_COMMIT](state, { file, lastCommit }) {
+    const changedFile = state.changedFiles.find(f => f.path === file.path);
+
+    Object.assign(state.entries[file.path], {
+      raw: file.content,
+      changed: !!changedFile,
+      staged: false,
+      lastCommit: Object.assign(state.entries[file.path].lastCommit, {
+        id: lastCommit.commit.id,
+        url: lastCommit.commit_path,
+        message: lastCommit.commit.message,
+        author: lastCommit.commit.author_name,
+        updatedAt: lastCommit.commit.authored_date,
+      }),
+    });
+  },
   ...projectMutations,
   ...mergeRequestMutation,
   ...fileMutations,
diff --git a/app/assets/javascripts/ide/stores/mutations/file.js b/app/assets/javascripts/ide/stores/mutations/file.js
index eeb14b5490c..dd7dcba8ac7 100644
--- a/app/assets/javascripts/ide/stores/mutations/file.js
+++ b/app/assets/javascripts/ide/stores/mutations/file.js
@@ -57,7 +57,9 @@ export default {
     });
   },
   [types.UPDATE_FILE_CONTENT](state, { path, content }) {
-    const changed = content !== state.entries[path].raw;
+    const stagedFile = state.stagedFiles.find(f => f.path === path);
+    const rawContent = stagedFile ? stagedFile.content : state.entries[path].raw;
+    const changed = content !== rawContent;
 
     Object.assign(state.entries[path], {
       content,
@@ -91,8 +93,10 @@ export default {
     });
   },
   [types.DISCARD_FILE_CHANGES](state, path) {
+    const stagedFile = state.stagedFiles.find(f => f.path === path);
+
     Object.assign(state.entries[path], {
-      content: state.entries[path].raw,
+      content: stagedFile ? stagedFile.content : state.entries[path].raw,
       changed: false,
     });
   },
@@ -106,16 +110,67 @@ export default {
       changedFiles: state.changedFiles.filter(f => f.path !== path),
     });
   },
+  [types.STAGE_CHANGE](state, path) {
+    const stagedFile = state.stagedFiles.find(f => f.path === path);
+
+    Object.assign(state, {
+      changedFiles: state.changedFiles.filter(f => f.path !== path),
+      entries: Object.assign(state.entries, {
+        [path]: Object.assign(state.entries[path], {
+          staged: true,
+          changed: false,
+        }),
+      }),
+    });
+
+    if (stagedFile) {
+      Object.assign(stagedFile, {
+        ...state.entries[path],
+      });
+    } else {
+      Object.assign(state, {
+        stagedFiles: state.stagedFiles.concat({
+          ...state.entries[path],
+        }),
+      });
+    }
+  },
+  [types.UNSTAGE_CHANGE](state, path) {
+    const changedFile = state.changedFiles.find(f => f.path === path);
+    const stagedFile = state.stagedFiles.find(f => f.path === path);
+
+    if (!changedFile && stagedFile) {
+      Object.assign(state.entries[path], {
+        ...stagedFile,
+        key: state.entries[path].key,
+        active: state.entries[path].active,
+        opened: state.entries[path].opened,
+        changed: true,
+      });
+
+      Object.assign(state, {
+        changedFiles: state.changedFiles.concat(state.entries[path]),
+      });
+    }
+
+    Object.assign(state, {
+      stagedFiles: state.stagedFiles.filter(f => f.path !== path),
+      entries: Object.assign(state.entries, {
+        [path]: Object.assign(state.entries[path], {
+          staged: false,
+        }),
+      }),
+    });
+  },
   [types.TOGGLE_FILE_CHANGED](state, { file, changed }) {
     Object.assign(state.entries[file.path], {
       changed,
     });
   },
   [types.ADD_PENDING_TAB](state, { file, keyPrefix = 'pending' }) {
-    const pendingTab = state.openFiles.find(f => f.path === file.path && f.pending);
-    let openFiles = state.openFiles.map(f =>
-      Object.assign(f, { active: f.path === file.path, opened: false }),
-    );
+    const key = `${keyPrefix}-${file.key}`;
+    const pendingTab = state.openFiles.find(f => f.key === key && f.pending);
+    let openFiles = state.openFiles.map(f => Object.assign(f, { active: false, opened: false }));
 
     if (!pendingTab) {
       const openFile = openFiles.find(f => f.path === file.path);
@@ -126,10 +181,11 @@ export default {
         if (f.path === file.path) {
           return acc.concat({
             ...f,
+            content: file.content,
             active: true,
             pending: true,
             opened: true,
-            key: `${keyPrefix}-${f.key}`,
+            key,
           });
         }
 
diff --git a/app/assets/javascripts/ide/stores/mutations/tree.js b/app/assets/javascripts/ide/stores/mutations/tree.js
index 7f7e470c9bb..1176c040fb9 100644
--- a/app/assets/javascripts/ide/stores/mutations/tree.js
+++ b/app/assets/javascripts/ide/stores/mutations/tree.js
@@ -17,12 +17,8 @@ export default {
     });
   },
   [types.SET_DIRECTORY_DATA](state, { data, treePath }) {
-    Object.assign(state, {
-      trees: Object.assign(state.trees, {
-        [treePath]: {
-          tree: data,
-        },
-      }),
+    Object.assign(state.trees[treePath], {
+      tree: data,
     });
   },
   [types.SET_LAST_COMMIT_URL](state, { tree = state, url }) {
diff --git a/app/assets/javascripts/ide/stores/state.js b/app/assets/javascripts/ide/stores/state.js
index e5cc8814000..34975ac3144 100644
--- a/app/assets/javascripts/ide/stores/state.js
+++ b/app/assets/javascripts/ide/stores/state.js
@@ -3,6 +3,7 @@ export default () => ({
   currentBranchId: '',
   currentMergeRequestId: '',
   changedFiles: [],
+  stagedFiles: [],
   endpoints: {},
   lastCommitMsg: '',
   lastCommitPath: '',
diff --git a/app/assets/javascripts/ide/stores/utils.js b/app/assets/javascripts/ide/stores/utils.js
index 05a019de54f..8a222da14c0 100644
--- a/app/assets/javascripts/ide/stores/utils.js
+++ b/app/assets/javascripts/ide/stores/utils.js
@@ -15,6 +15,7 @@ export const dataStructure = () => ({
   opened: false,
   active: false,
   changed: false,
+  staged: false,
   lastCommitPath: '',
   lastCommit: {
     id: '',
@@ -101,7 +102,7 @@ export const setPageTitle = title => {
 export const createCommitPayload = (branch, newBranch, state, rootState) => ({
   branch,
   commit_message: state.commitMessage,
-  actions: rootState.changedFiles.map(f => ({
+  actions: rootState.stagedFiles.map(f => ({
     action: f.tempFile ? 'create' : 'update',
     file_path: f.path,
     content: f.content,
diff --git a/app/assets/javascripts/issuable_context.js b/app/assets/javascripts/issuable_context.js
index 7470d634b99..f3d722409b0 100644
--- a/app/assets/javascripts/issuable_context.js
+++ b/app/assets/javascripts/issuable_context.js
@@ -30,10 +30,10 @@ export default class IssuableContext {
         const $selectbox = $block.find('.selectbox');
         if ($selectbox.is(':visible')) {
           $selectbox.hide();
-          $block.find('.value').show();
+          $block.find('.value:not(.dont-hide)').show();
         } else {
           $selectbox.show();
-          $block.find('.value').hide();
+          $block.find('.value:not(.dont-hide)').hide();
         }
 
         if ($selectbox.is(':visible')) {
diff --git a/app/assets/javascripts/jobs/components/header.vue b/app/assets/javascripts/jobs/components/header.vue
index 357bc9aab17..21b545d6cab 100644
--- a/app/assets/javascripts/jobs/components/header.vue
+++ b/app/assets/javascripts/jobs/components/header.vue
@@ -1,82 +1,94 @@
 <script>
-  import ciHeader from '../../vue_shared/components/header_ci_component.vue';
-  import loadingIcon from '../../vue_shared/components/loading_icon.vue';
+import ciHeader from '../../vue_shared/components/header_ci_component.vue';
+import loadingIcon from '../../vue_shared/components/loading_icon.vue';
+import callout from '../../vue_shared/components/callout.vue';
 
-  export default {
-    name: 'JobHeaderSection',
-    components: {
-      ciHeader,
-      loadingIcon,
+export default {
+  name: 'JobHeaderSection',
+  components: {
+    ciHeader,
+    loadingIcon,
+    callout,
+  },
+  props: {
+    job: {
+      type: Object,
+      required: true,
     },
-    props: {
-      job: {
-        type: Object,
-        required: true,
-      },
-      isLoading: {
-        type: Boolean,
-        required: true,
-      },
+    isLoading: {
+      type: Boolean,
+      required: true,
     },
-    data() {
-      return {
-        actions: this.getActions(),
-      };
+  },
+  data() {
+    return {
+      actions: this.getActions(),
+    };
+  },
+  computed: {
+    status() {
+      return this.job && this.job.status;
     },
-    computed: {
-      status() {
-        return this.job && this.job.status;
-      },
-      shouldRenderContent() {
-        return !this.isLoading && Object.keys(this.job).length;
-      },
-      /**
-       * When job has not started the key will be `false`
-       * When job started the key will be a string with a date.
-       */
-      jobStarted() {
-        return !this.job.started === false;
-      },
+    shouldRenderContent() {
+      return !this.isLoading && Object.keys(this.job).length;
     },
-    watch: {
-      job() {
-        this.actions = this.getActions();
-      },
+    shouldRenderReason() {
+      return !!(this.job.status && this.job.callout_message);
     },
-    methods: {
-      getActions() {
-        const actions = [];
+    /**
+     * When job has not started the key will be `false`
+     * When job started the key will be a string with a date.
+     */
+    jobStarted() {
+      return !this.job.started === false;
+    },
+  },
+  watch: {
+    job() {
+      this.actions = this.getActions();
+    },
+  },
+  methods: {
+    getActions() {
+      const actions = [];
 
-        if (this.job.new_issue_path) {
-          actions.push({
-            label: 'New issue',
-            path: this.job.new_issue_path,
-            cssClass: 'js-new-issue btn btn-new btn-inverted visible-md-block visible-lg-block',
-            type: 'link',
-          });
-        }
-        return actions;
-      },
+      if (this.job.new_issue_path) {
+        actions.push({
+          label: 'New issue',
+          path: this.job.new_issue_path,
+          cssClass: 'js-new-issue btn btn-new btn-inverted visible-md-block visible-lg-block',
+          type: 'link',
+        });
+      }
+      return actions;
     },
-  };
+  },
+};
 </script>
 <template>
-  <div class="js-build-header build-header top-area">
-    <ci-header
-      v-if="shouldRenderContent"
-      :status="status"
-      item-name="Job"
-      :item-id="job.id"
-      :time="job.created_at"
-      :user="job.user"
-      :actions="actions"
-      :has-sidebar-button="true"
-      :should-render-triggered-label="jobStarted"
-    />
-    <loading-icon
-      v-if="isLoading"
-      size="2"
-      class="prepend-top-default append-bottom-default"
+  <header>
+    <div class="js-build-header build-header top-area">
+      <ci-header
+        v-if="shouldRenderContent"
+        :status="status"
+        item-name="Job"
+        :item-id="job.id"
+        :time="job.created_at"
+        :user="job.user"
+        :actions="actions"
+        :has-sidebar-button="true"
+        :should-render-triggered-label="jobStarted"
+      />
+      <loading-icon
+        v-if="isLoading"
+        size="2"
+        class="prepend-top-default append-bottom-default"
+      />
+    </div>
+
+    <callout
+      v-if="shouldRenderReason"
+      :message="job.callout_message"
     />
-  </div>
+  </header>
 </template>
diff --git a/app/assets/javascripts/jobs/components/sidebar_details_block.vue b/app/assets/javascripts/jobs/components/sidebar_details_block.vue
index af47056d98f..4cd44bf7a76 100644
--- a/app/assets/javascripts/jobs/components/sidebar_details_block.vue
+++ b/app/assets/javascripts/jobs/components/sidebar_details_block.vue
@@ -1,80 +1,119 @@
 <script>
-  import detailRow from './sidebar_detail_row.vue';
-  import loadingIcon from '../../vue_shared/components/loading_icon.vue';
-  import timeagoMixin from '../../vue_shared/mixins/timeago';
-  import { timeIntervalInWords } from '../../lib/utils/datetime_utility';
+import detailRow from './sidebar_detail_row.vue';
+import loadingIcon from '../../vue_shared/components/loading_icon.vue';
+import timeagoMixin from '../../vue_shared/mixins/timeago';
+import { timeIntervalInWords } from '../../lib/utils/datetime_utility';
 
-  export default {
-    name: 'SidebarDetailsBlock',
-    components: {
-      detailRow,
-      loadingIcon,
+export default {
+  name: 'SidebarDetailsBlock',
+  components: {
+    detailRow,
+    loadingIcon,
+  },
+  mixins: [timeagoMixin],
+  props: {
+    job: {
+      type: Object,
+      required: true,
     },
-    mixins: [
-      timeagoMixin,
-    ],
-    props: {
-      job: {
-        type: Object,
-        required: true,
-      },
-      isLoading: {
-        type: Boolean,
-        required: true,
-      },
-      runnerHelpUrl: {
-        type: String,
-        required: false,
-        default: '',
-      },
+    isLoading: {
+      type: Boolean,
+      required: true,
     },
-    computed: {
-      shouldRenderContent() {
-        return !this.isLoading && Object.keys(this.job).length > 0;
-      },
-      coverage() {
-        return `${this.job.coverage}%`;
-      },
-      duration() {
-        return timeIntervalInWords(this.job.duration);
-      },
-      queued() {
-        return timeIntervalInWords(this.job.queued);
-      },
-      runnerId() {
-        return `#${this.job.runner.id}`;
-      },
-      hasTimeout() {
-        return this.job.metadata != null && this.job.metadata.timeout_human_readable !== null;
-      },
-      timeout() {
-        if (this.job.metadata == null) {
-          return '';
-        }
+    canUserRetry: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    runnerHelpUrl: {
+      type: String,
+      required: false,
+      default: '',
+    },
+  },
+  computed: {
+    shouldRenderContent() {
+      return !this.isLoading && Object.keys(this.job).length > 0;
+    },
+    coverage() {
+      return `${this.job.coverage}%`;
+    },
+    duration() {
+      return timeIntervalInWords(this.job.duration);
+    },
+    queued() {
+      return timeIntervalInWords(this.job.queued);
+    },
+    runnerId() {
+      return `#${this.job.runner.id}`;
+    },
+    retryButtonClass() {
+      let className = 'js-retry-button pull-right btn btn-retry visible-md-block visible-lg-block';
+      className +=
+        this.job.status && this.job.recoverable
+          ? ' btn-primary'
+          : ' btn-inverted-secondary';
+      return className;
+    },
+    hasTimeout() {
+      return this.job.metadata != null && this.job.metadata.timeout_human_readable !== null;
+    },
+    timeout() {
+      if (this.job.metadata == null) {
+        return '';
+      }
 
-        let t = this.job.metadata.timeout_human_readable;
-        if (this.job.metadata.timeout_source !== '') {
-          t += ` (from ${this.job.metadata.timeout_source})`;
-        }
+      let t = this.job.metadata.timeout_human_readable;
+      if (this.job.metadata.timeout_source !== '') {
+        t += ` (from ${this.job.metadata.timeout_source})`;
+      }
 
-        return t;
-      },
-      renderBlock() {
-        return this.job.merge_request ||
-          this.job.duration ||
-          this.job.finished_data ||
-          this.job.erased_at ||
-          this.job.queued ||
-          this.job.runner ||
-          this.job.coverage ||
-          this.job.tags.length ||
-          this.job.cancel_path;
-      },
+      return t;
     },
-  };
+    renderBlock() {
+      return (
+        this.job.merge_request ||
+        this.job.duration ||
+        this.job.finished_data ||
+        this.job.erased_at ||
+        this.job.queued ||
+        this.job.runner ||
+        this.job.coverage ||
+        this.job.tags.length ||
+        this.job.cancel_path
+      );
+    },
+  },
+};
 </script>
 <template>
   <div>
+    <div class="block">
+      <strong class="inline prepend-top-8">
+        {{ job.name }}
+      </strong>
+      <a
+        v-if="canUserRetry"
+        :class="retryButtonClass"
+        :href="job.retry_path"
+        data-method="post"
+        rel="nofollow"
+      >
+        {{ __('Retry') }}
+      </a>
+      <button
+        type="button"
+        :aria-label="__('Toggle Sidebar')"
+        class="btn btn-blank gutter-toggle pull-right
+          visible-xs-block visible-sm-block js-sidebar-build-toggle"
+      >
+        <i
+          aria-hidden="true"
+          data-hidden="true"
+          class="fa fa-angle-double-right"
+        ></i>
+      </button>
+    </div>
     <template v-if="shouldRenderContent">
       <div
         class="block retry-link"
@@ -85,16 +124,16 @@
           class="js-new-issue btn btn-new btn-inverted"
           :href="job.new_issue_path"
         >
-          New issue
+          {{ __('New issue') }}
         </a>
         <a
-          v-if="job.retry_path"
+          v-if="canUserRetry"
           class="js-retry-job btn btn-inverted-secondary"
           :href="job.retry_path"
           data-method="post"
           rel="nofollow"
         >
-          Retry
+          {{ __('Retry') }}
         </a>
       </div>
       <div :class="{block : renderBlock }">
@@ -103,7 +142,7 @@
           v-if="job.merge_request"
         >
           <span class="build-light-text">
-            Merge Request:
+            {{ __('Merge Request:') }}
           </span>
           <a :href="job.merge_request.path">
             !{{ job.merge_request.iid }}
@@ -158,7 +197,7 @@
           v-if="job.tags.length"
         >
           <span class="build-light-text">
-            Tags:
+            {{ __('Tags:') }}
           </span>
           <span
             v-for="(tag, i) in job.tags"
@@ -178,7 +217,7 @@
             data-method="post"
             rel="nofollow"
           >
-            Cancel
+            {{ __('Cancel') }}
           </a>
         </div>
       </div>
diff --git a/app/assets/javascripts/jobs/job_details_bundle.js b/app/assets/javascripts/jobs/job_details_bundle.js
index 656676ead91..f2939ad4dbe 100644
--- a/app/assets/javascripts/jobs/job_details_bundle.js
+++ b/app/assets/javascripts/jobs/job_details_bundle.js
@@ -35,9 +35,11 @@ export default () => {
   });
 
   // Sidebar information block
+  const detailsBlockElement = document.getElementById('js-details-block-vue');
+  const detailsBlockDataset = detailsBlockElement.dataset;
   // eslint-disable-next-line
   new Vue({
-    el: '#js-details-block-vue',
+    el: detailsBlockElement,
     components: {
       detailsBlock,
     },
@@ -50,6 +52,7 @@ export default () => {
       return createElement('details-block', {
         props: {
           isLoading: this.mediator.state.isLoading,
+          canUserRetry: !!('canUserRetry' in detailsBlockDataset),
           job: this.mediator.store.state.job,
           runnerHelpUrl: dataset.runnerHelpUrl,
         },
diff --git a/app/assets/javascripts/labels_select.js b/app/assets/javascripts/labels_select.js
index d0050abb8e9..9b62cfb8206 100644
--- a/app/assets/javascripts/labels_select.js
+++ b/app/assets/javascripts/labels_select.js
@@ -83,7 +83,7 @@ export default class LabelsSelect {
         $dropdown.trigger('loading.gl.dropdown');
         axios.put(issueUpdateURL, data)
           .then(({ data }) => {
-            var labelCount, template, labelTooltipTitle, labelTitles;
+            var labelCount, template, labelTooltipTitle, labelTitles, formattedLabels;
             $loading.fadeOut();
             $dropdown.trigger('loaded.gl.dropdown');
             $selectbox.hide();
@@ -115,8 +115,7 @@ export default class LabelsSelect {
               labelTooltipTitle = labelTitles.join(', ');
             }
             else {
-              labelTooltipTitle = '';
-              $sidebarLabelTooltip.tooltip('destroy');
+              labelTooltipTitle = __('Labels');
             }
 
             $sidebarLabelTooltip
diff --git a/app/assets/javascripts/milestone_select.js b/app/assets/javascripts/milestone_select.js
index d0a2b27b0e6..7e9a50a885d 100644
--- a/app/assets/javascripts/milestone_select.js
+++ b/app/assets/javascripts/milestone_select.js
@@ -4,6 +4,7 @@
 
 import $ from 'jquery';
 import _ from 'underscore';
+import { __ } from '~/locale';
 import axios from './lib/utils/axios_utils';
 import { timeFor } from './lib/utils/datetime_utility';
 import ModalStore from './boards/stores/modal_store';
@@ -25,7 +26,7 @@ export default class MilestoneSelect {
     }
 
     $els.each((i, dropdown) => {
-      let collapsedSidebarLabelTemplate, milestoneLinkNoneTemplate, milestoneLinkTemplate, selectedMilestone, selectedMilestoneDefault;
+      let milestoneLinkNoneTemplate, milestoneLinkTemplate, selectedMilestone, selectedMilestoneDefault;
       const $dropdown = $(dropdown);
       const projectId = $dropdown.data('projectId');
       const milestonesUrl = $dropdown.data('milestones');
@@ -52,7 +53,6 @@ export default class MilestoneSelect {
       if (issueUpdateURL) {
         milestoneLinkTemplate = _.template('<a href="/<%- full_path %>/milestones/<%- iid %>" class="bold has-tooltip" data-container="body" title="<%- remaining %>"><%- title %></a>');
         milestoneLinkNoneTemplate = '<span class="no-value">None</span>';
-        collapsedSidebarLabelTemplate = _.template('<span class="has-tooltip" data-container="body" title="<%- name %><br /><%- remaining %>" data-placement="left" data-html="true"> <%- title %> </span>');
       }
       return $dropdown.glDropdown({
         showMenuAbove: showMenuAbove,
@@ -214,10 +214,16 @@ export default class MilestoneSelect {
                   data.milestone.remaining = timeFor(data.milestone.due_date);
                   data.milestone.name = data.milestone.title;
                   $value.html(milestoneLinkTemplate(data.milestone));
-                  return $sidebarCollapsedValue.find('span').html(collapsedSidebarLabelTemplate(data.milestone));
+                  return $sidebarCollapsedValue
+                    .attr('data-original-title', `${data.milestone.name}<br />${data.milestone.remaining}`)
+                    .find('span')
+                    .text(data.milestone.title);
                 } else {
                   $value.html(milestoneLinkNoneTemplate);
-                  return $sidebarCollapsedValue.find('span').text('No');
+                  return $sidebarCollapsedValue
+                    .attr('data-original-title', __('Milestone'))
+                    .find('span')
+                    .text(__('None'));
                 }
               })
               .catch(() => {
diff --git a/app/assets/javascripts/notes.js b/app/assets/javascripts/notes.js
index b0573510ff9..96f2b3eac98 100644
--- a/app/assets/javascripts/notes.js
+++ b/app/assets/javascripts/notes.js
@@ -19,7 +19,6 @@ import AjaxCache from '~/lib/utils/ajax_cache';
 import Vue from 'vue';
 import syntaxHighlight from '~/syntax_highlight';
 import SkeletonLoadingContainer from '~/vue_shared/components/skeleton_loading_container.vue';
-import { __ } from '~/locale';
 import axios from './lib/utils/axios_utils';
 import { getLocationHash } from './lib/utils/url_utility';
 import Flash from './flash';
@@ -198,6 +197,8 @@ export default class Notes {
     );
 
     this.$wrapperEl.on('click', '.js-toggle-lazy-diff', this.loadLazyDiff);
+    this.$wrapperEl.on('click', '.js-toggle-lazy-diff-retry-button', this.onClickRetryLazyLoad.bind(this));
+
     // fetch notes when tab becomes visible
     this.$wrapperEl.on('visibilitychange', this.visibilityChange);
     // when issue status changes, we need to refresh data
@@ -244,6 +245,7 @@ export default class Notes {
     this.$wrapperEl.off('click', '.js-comment-resolve-button');
     this.$wrapperEl.off('click', '.system-note-commit-list-toggler');
     this.$wrapperEl.off('click', '.js-toggle-lazy-diff');
+    this.$wrapperEl.off('click', '.js-toggle-lazy-diff-retry-button');
     this.$wrapperEl.off('ajax:success', '.js-main-target-form');
     this.$wrapperEl.off('ajax:success', '.js-discussion-note-form');
     this.$wrapperEl.off('ajax:complete', '.js-main-target-form');
@@ -1425,22 +1427,21 @@ export default class Notes {
     const { discussion_html } = data;
     const lines = $(discussion_html).find('.line_holder');
     lines.addClass('fade-in');
-    $container.find('tbody').prepend(lines);
+    $container.find('.diff-content > table > tbody').prepend(lines);
     const fileHolder = $container.find('.file-holder');
     $container.find('.line-holder-placeholder').remove();
     syntaxHighlight(fileHolder);
   }
 
-  static renderDiffError($container) {
-    $container.find('.line_content').html(
-      $(`
-        <div class="nothing-here-block">
-          ${__(
-            'Unable to load the diff.',
-          )} <a class="js-toggle-lazy-diff" href="javascript:void(0)">Try again</a>?
-        </div>
-      `),
-    );
+  onClickRetryLazyLoad(e) {
+    const $retryButton = $(e.currentTarget);
+
+    $retryButton.prop('disabled', true);
+
+    return this.loadLazyDiff(e)
+    .then(() => {
+      $retryButton.prop('disabled', false);
+    });
   }
 
   loadLazyDiff(e) {
@@ -1449,20 +1450,35 @@ export default class Notes {
 
     $container.find('.js-toggle-lazy-diff').removeClass('js-toggle-lazy-diff');
 
-    const tableEl = $container.find('tbody');
-    if (tableEl.length === 0) return;
+    const $tableEl = $container.find('tbody');
+    if ($tableEl.length === 0) return;
 
     const fileHolder = $container.find('.file-holder');
     const url = fileHolder.data('linesPath');
 
-    axios
+    const $errorContainer = $container.find('.js-error-lazy-load-diff');
+    const $successContainer = $container.find('.js-success-lazy-load');
+
+    /**
+     * We only fetch resolved discussions.
+     * Unresolved discussions don't have an endpoint being provided.
+     */
+    if (url) {
+      return axios
       .get(url)
       .then(({ data }) => {
+        // Reset state in case last request returned error
+        $successContainer.removeClass('hidden');
+        $errorContainer.addClass('hidden');
+
         Notes.renderDiffContent($container, data);
       })
       .catch(() => {
-        Notes.renderDiffError($container);
+        $successContainer.addClass('hidden');
+        $errorContainer.removeClass('hidden');
       });
+    }
+    return Promise.resolve();
   }
 
   toggleCommitList(e) {
diff --git a/app/assets/javascripts/pages/users/activity_calendar.js b/app/assets/javascripts/pages/users/activity_calendar.js
index 8ce938c958b..cbc2d80ee18 100644
--- a/app/assets/javascripts/pages/users/activity_calendar.js
+++ b/app/assets/javascripts/pages/users/activity_calendar.js
@@ -19,7 +19,7 @@ function getSystemDate(systemUtcOffsetSeconds) {
   const date = new Date();
   const localUtcOffsetMinutes = 0 - date.getTimezoneOffset();
   const systemUtcOffsetMinutes = systemUtcOffsetSeconds / 60;
-  date.setMinutes((date.getMinutes() - localUtcOffsetMinutes) + systemUtcOffsetMinutes);
+  date.setMinutes(date.getMinutes() - localUtcOffsetMinutes + systemUtcOffsetMinutes);
   return date;
 }
 
@@ -35,18 +35,36 @@ function formatTooltipText({ date, count }) {
   return `${contribText}<br />${dateDayName} ${dateText}`;
 }
 
-const initColorKey = () => d3.scaleLinear().range(['#acd5f2', '#254e77']).domain([0, 3]);
+const initColorKey = () =>
+  d3
+    .scaleLinear()
+    .range(['#acd5f2', '#254e77'])
+    .domain([0, 3]);
 
 export default class ActivityCalendar {
-  constructor(container, timestamps, calendarActivitiesPath, utcOffset = 0) {
+  constructor(container, timestamps, calendarActivitiesPath, utcOffset = 0, firstDayOfWeek = 0) {
     this.calendarActivitiesPath = calendarActivitiesPath;
     this.clickDay = this.clickDay.bind(this);
     this.currentSelectedDate = '';
     this.daySpace = 1;
     this.daySize = 15;
-    this.daySizeWithSpace = this.daySize + (this.daySpace * 2);
-    this.monthNames = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
+    this.daySizeWithSpace = this.daySize + this.daySpace * 2;
+    this.monthNames = [
+      'Jan',
+      'Feb',
+      'Mar',
+      'Apr',
+      'May',
+      'Jun',
+      'Jul',
+      'Aug',
+      'Sep',
+      'Oct',
+      'Nov',
+      'Dec',
+    ];
     this.months = [];
+    this.firstDayOfWeek = firstDayOfWeek;
 
     // Loop through the timestamps to create a group of objects
     // The group of objects will be grouped based on the day of the week they are
@@ -70,7 +88,7 @@ export default class ActivityCalendar {
 
       // Create a new group array if this is the first day of the week
       // or if is first object
-      if ((day === 0 && i !== 0) || i === 0) {
+      if ((day === this.firstDayOfWeek && i !== 0) || i === 0) {
         this.timestampsTmp.push([]);
         group += 1;
       }
@@ -109,21 +127,30 @@ export default class ActivityCalendar {
   }
 
   renderSvg(container, group) {
-    const width = ((group + 1) * this.daySizeWithSpace) + this.getExtraWidthPadding(group);
-    return d3.select(container)
+    const width = (group + 1) * this.daySizeWithSpace + this.getExtraWidthPadding(group);
+    return d3
+      .select(container)
       .append('svg')
-        .attr('width', width)
-        .attr('height', 167)
-        .attr('class', 'contrib-calendar');
+      .attr('width', width)
+      .attr('height', 167)
+      .attr('class', 'contrib-calendar');
+  }
+
+  dayYPos(day) {
+    return this.daySizeWithSpace * ((day + 7 - this.firstDayOfWeek) % 7);
   }
 
   renderDays() {
-    this.svg.selectAll('g').data(this.timestampsTmp).enter().append('g')
+    this.svg
+      .selectAll('g')
+      .data(this.timestampsTmp)
+      .enter()
+      .append('g')
       .attr('transform', (group, i) => {
         _.each(group, (stamp, a) => {
           if (a === 0 && stamp.day === 0) {
             const month = stamp.date.getMonth();
-            const x = (this.daySizeWithSpace * i) + 1 + this.daySizeWithSpace;
+            const x = this.daySizeWithSpace * i + 1 + this.daySizeWithSpace;
             const lastMonth = _.last(this.months);
             if (
               lastMonth == null ||
@@ -133,86 +160,113 @@ export default class ActivityCalendar {
             }
           }
         });
-        return `translate(${(this.daySizeWithSpace * i) + 1 + this.daySizeWithSpace}, 18)`;
+        return `translate(${this.daySizeWithSpace * i + 1 + this.daySizeWithSpace}, 18)`;
       })
       .selectAll('rect')
-        .data(stamp => stamp)
-        .enter()
-        .append('rect')
-          .attr('x', '0')
-          .attr('y', stamp => this.daySizeWithSpace * stamp.day)
-          .attr('width', this.daySize)
-          .attr('height', this.daySize)
-          .attr('fill', stamp => (
-            stamp.count !== 0 ? this.color(Math.min(stamp.count, 40)) : '#ededed'
-          ))
-          .attr('title', stamp => formatTooltipText(stamp))
-          .attr('class', 'user-contrib-cell js-tooltip')
-          .attr('data-container', 'body')
-          .on('click', this.clickDay);
+      .data(stamp => stamp)
+      .enter()
+      .append('rect')
+      .attr('x', '0')
+      .attr('y', stamp => this.dayYPos(stamp.day))
+      .attr('width', this.daySize)
+      .attr('height', this.daySize)
+      .attr(
+        'fill',
+        stamp => (stamp.count !== 0 ? this.color(Math.min(stamp.count, 40)) : '#ededed'),
+      )
+      .attr('title', stamp => formatTooltipText(stamp))
+      .attr('class', 'user-contrib-cell js-tooltip')
+      .attr('data-container', 'body')
+      .on('click', this.clickDay);
   }
 
   renderDayTitles() {
     const days = [
       {
         text: 'M',
-        y: 29 + (this.daySizeWithSpace * 1),
-      }, {
+        y: 29 + this.dayYPos(1),
+      },
+      {
         text: 'W',
-        y: 29 + (this.daySizeWithSpace * 3),
-      }, {
+        y: 29 + this.dayYPos(2),
+      },
+      {
         text: 'F',
-        y: 29 + (this.daySizeWithSpace * 5),
+        y: 29 + this.dayYPos(3),
       },
     ];
-    this.svg.append('g')
+    this.svg
+      .append('g')
       .selectAll('text')
-        .data(days)
-        .enter()
-        .append('text')
-          .attr('text-anchor', 'middle')
-          .attr('x', 8)
-          .attr('y', day => day.y)
-          .text(day => day.text)
-          .attr('class', 'user-contrib-text');
+      .data(days)
+      .enter()
+      .append('text')
+      .attr('text-anchor', 'middle')
+      .attr('x', 8)
+      .attr('y', day => day.y)
+      .text(day => day.text)
+      .attr('class', 'user-contrib-text');
   }
 
   renderMonths() {
-    this.svg.append('g')
+    this.svg
+      .append('g')
       .attr('direction', 'ltr')
       .selectAll('text')
-        .data(this.months)
-        .enter()
-        .append('text')
-          .attr('x', date => date.x)
-          .attr('y', 10)
-          .attr('class', 'user-contrib-text')
-          .text(date => this.monthNames[date.month]);
+      .data(this.months)
+      .enter()
+      .append('text')
+      .attr('x', date => date.x)
+      .attr('y', 10)
+      .attr('class', 'user-contrib-text')
+      .text(date => this.monthNames[date.month]);
   }
 
   renderKey() {
-    const keyValues = ['no contributions', '1-9 contributions', '10-19 contributions', '20-29 contributions', '30+ contributions'];
-    const keyColors = ['#ededed', this.colorKey(0), this.colorKey(1), this.colorKey(2), this.colorKey(3)];
+    const keyValues = [
+      'no contributions',
+      '1-9 contributions',
+      '10-19 contributions',
+      '20-29 contributions',
+      '30+ contributions',
+    ];
+    const keyColors = [
+      '#ededed',
+      this.colorKey(0),
+      this.colorKey(1),
+      this.colorKey(2),
+      this.colorKey(3),
+    ];
 
-    this.svg.append('g')
-      .attr('transform', `translate(18, ${(this.daySizeWithSpace * 8) + 16})`)
+    this.svg
+      .append('g')
+      .attr('transform', `translate(18, ${this.daySizeWithSpace * 8 + 16})`)
       .selectAll('rect')
-        .data(keyColors)
-        .enter()
-        .append('rect')
-          .attr('width', this.daySize)
-          .attr('height', this.daySize)
-          .attr('x', (color, i) => this.daySizeWithSpace * i)
-          .attr('y', 0)
-          .attr('fill', color => color)
-          .attr('class', 'js-tooltip')
-          .attr('title', (color, i) => keyValues[i])
-          .attr('data-container', 'body');
+      .data(keyColors)
+      .enter()
+      .append('rect')
+      .attr('width', this.daySize)
+      .attr('height', this.daySize)
+      .attr('x', (color, i) => this.daySizeWithSpace * i)
+      .attr('y', 0)
+      .attr('fill', color => color)
+      .attr('class', 'js-tooltip')
+      .attr('title', (color, i) => keyValues[i])
+      .attr('data-container', 'body');
   }
 
   initColor() {
-    const colorRange = ['#ededed', this.colorKey(0), this.colorKey(1), this.colorKey(2), this.colorKey(3)];
-    return d3.scaleThreshold().domain([0, 10, 20, 30]).range(colorRange);
+    const colorRange = [
+      '#ededed',
+      this.colorKey(0),
+      this.colorKey(1),
+      this.colorKey(2),
+      this.colorKey(3),
+    ];
+    return d3
+      .scaleThreshold()
+      .domain([0, 10, 20, 30])
+      .range(colorRange);
   }
 
   clickDay(stamp) {
@@ -227,14 +281,15 @@ export default class ActivityCalendar {
 
       $('.user-calendar-activities').html(LOADING_HTML);
 
-      axios.get(this.calendarActivitiesPath, {
-        params: {
-          date,
-        },
-        responseType: 'text',
-      })
-      .then(({ data }) => $('.user-calendar-activities').html(data))
-      .catch(() => flash(__('An error occurred while retrieving calendar activity')));
+      axios
+        .get(this.calendarActivitiesPath, {
+          params: {
+            date,
+          },
+          responseType: 'text',
+        })
+        .then(({ data }) => $('.user-calendar-activities').html(data))
+        .catch(() => flash(__('An error occurred while retrieving calendar activity')));
     } else {
       this.currentSelectedDate = '';
       $('.user-calendar-activities').html('');
diff --git a/app/assets/javascripts/performance_bar/services/performance_bar_service.js b/app/assets/javascripts/performance_bar/services/performance_bar_service.js
index 3ebfaa87a4e..bc71911ae35 100644
--- a/app/assets/javascripts/performance_bar/services/performance_bar_service.js
+++ b/app/assets/javascripts/performance_bar/services/performance_bar_service.js
@@ -10,29 +10,25 @@ export default class PerformanceBarService {
   }
 
   static registerInterceptor(peekUrl, callback) {
-    vueResourceInterceptor = (request, next) => {
-      next(response => {
-        const requestId = response.headers['x-request-id'];
-        const requestUrl = response.url;
-
-        if (requestUrl !== peekUrl && requestId) {
-          callback(requestId, requestUrl);
-        }
-      });
-    };
-
-    Vue.http.interceptors.push(vueResourceInterceptor);
-
-    return axios.interceptors.response.use(response => {
+    const interceptor = response => {
       const requestId = response.headers['x-request-id'];
-      const requestUrl = response.config.url;
+      // Get the request URL from response.config for Axios, and response for
+      // Vue Resource.
+      const requestUrl = (response.config || response).url;
+      const cachedResponse = response.headers['x-gitlab-from-cache'] === 'true';
 
-      if (requestUrl !== peekUrl && requestId) {
+      if (requestUrl !== peekUrl && requestId && !cachedResponse) {
         callback(requestId, requestUrl);
       }
 
       return response;
-    });
+    };
+
+    vueResourceInterceptor = (request, next) => next(interceptor);
+
+    Vue.http.interceptors.push(vueResourceInterceptor);
+
+    return axios.interceptors.response.use(interceptor);
   }
 
   static removeInterceptor(interceptor) {
diff --git a/app/assets/javascripts/pipelines/components/graph/action_component.vue b/app/assets/javascripts/pipelines/components/graph/action_component.vue
index e99d949801f..29ee73a2a6f 100644
--- a/app/assets/javascripts/pipelines/components/graph/action_component.vue
+++ b/app/assets/javascripts/pipelines/components/graph/action_component.vue
@@ -32,26 +32,38 @@ export default {
       required: true,
     },
 
-    buttonDisabled: {
+    requestFinishedFor: {
       type: String,
       required: false,
-      default: null,
+      default: '',
     },
   },
+  data() {
+    return {
+      isDisabled: false,
+      linkRequested: '',
+    };
+  },
+
   computed: {
     cssClass() {
       const actionIconDash = dasherize(this.actionIcon);
       return `${actionIconDash} js-icon-${actionIconDash}`;
     },
-    isDisabled() {
-      return this.buttonDisabled === this.link;
+  },
+  watch: {
+    requestFinishedFor() {
+      if (this.requestFinishedFor === this.linkRequested) {
+        this.isDisabled = false;
+      }
     },
   },
-
   methods: {
     onClickAction() {
       $(this.$el).tooltip('hide');
       eventHub.$emit('graphAction', this.link);
+      this.linkRequested = this.link;
+      this.isDisabled = true;
     },
   },
 };
@@ -62,7 +74,8 @@ export default {
     @click="onClickAction"
     v-tooltip
     :title="tooltipText"
-    class="btn btn-blank btn-transparent ci-action-icon-container ci-action-icon-wrapper"
+    class="js-ci-action btn btn-blank
+btn-transparent ci-action-icon-container ci-action-icon-wrapper"
     :class="cssClass"
     data-container="body"
     :disabled="isDisabled"
diff --git a/app/assets/javascripts/pipelines/components/graph/dropdown_action_component.vue b/app/assets/javascripts/pipelines/components/graph/dropdown_action_component.vue
deleted file mode 100644
index 7c4fd65e36f..00000000000
--- a/app/assets/javascripts/pipelines/components/graph/dropdown_action_component.vue
+++ /dev/null
@@ -1,53 +0,0 @@
-<script>
-  import icon from '../../../vue_shared/components/icon.vue';
-  import tooltip from '../../../vue_shared/directives/tooltip';
-
-  /**
-   * Renders either a cancel, retry or play icon pointing to the given path.
-   * TODO: Remove UJS from here and use an async request instead.
-   */
-  export default {
-    components: {
-      icon,
-    },
-
-    directives: {
-      tooltip,
-    },
-    props: {
-      tooltipText: {
-        type: String,
-        required: true,
-      },
-
-      link: {
-        type: String,
-        required: true,
-      },
-
-      actionMethod: {
-        type: String,
-        required: true,
-      },
-
-      actionIcon: {
-        type: String,
-        required: true,
-      },
-    },
-  };
-</script>
-<template>
-  <a
-    v-tooltip
-    :data-method="actionMethod"
-    :title="tooltipText"
-    :href="link"
-    rel="nofollow"
-    class="ci-action-icon-wrapper js-ci-status-icon"
-    data-container="body"
-    aria-label="Job's action"
-  >
-    <icon :name="actionIcon" />
-  </a>
-</template>
diff --git a/app/assets/javascripts/pipelines/components/graph/dropdown_job_component.vue b/app/assets/javascripts/pipelines/components/graph/dropdown_job_component.vue
index be213c2ee78..43121dd38f3 100644
--- a/app/assets/javascripts/pipelines/components/graph/dropdown_job_component.vue
+++ b/app/assets/javascripts/pipelines/components/graph/dropdown_job_component.vue
@@ -1,77 +1,83 @@
 <script>
-  import $ from 'jquery';
-  import jobNameComponent from './job_name_component.vue';
-  import jobComponent from './job_component.vue';
-  import tooltip from '../../../vue_shared/directives/tooltip';
+import $ from 'jquery';
+import JobNameComponent from './job_name_component.vue';
+import JobComponent from './job_component.vue';
+import tooltip from '../../../vue_shared/directives/tooltip';
 
-  /**
-   * Renders the dropdown for the pipeline graph.
-   *
-   * The following object should be provided as `job`:
-   *
-   * {
-   *   "id": 4256,
-   *   "name": "test",
-   *   "status": {
-   *     "icon": "icon_status_success",
-   *     "text": "passed",
-   *     "label": "passed",
-   *     "group": "success",
-   *     "details_path": "/root/ci-mock/builds/4256",
-   *     "action": {
-   *       "icon": "retry",
-   *       "title": "Retry",
-   *       "path": "/root/ci-mock/builds/4256/retry",
-   *       "method": "post"
-   *     }
-   *   }
-   * }
-   */
-  export default {
-    directives: {
-      tooltip,
-    },
+/**
+ * Renders the dropdown for the pipeline graph.
+ *
+ * The following object should be provided as `job`:
+ *
+ * {
+ *   "id": 4256,
+ *   "name": "test",
+ *   "status": {
+ *     "icon": "icon_status_success",
+ *     "text": "passed",
+ *     "label": "passed",
+ *     "group": "success",
+ *     "details_path": "/root/ci-mock/builds/4256",
+ *     "action": {
+ *       "icon": "retry",
+ *       "title": "Retry",
+ *       "path": "/root/ci-mock/builds/4256/retry",
+ *       "method": "post"
+ *     }
+ *   }
+ * }
+ */
+export default {
+  directives: {
+    tooltip,
+  },
 
-    components: {
-      jobComponent,
-      jobNameComponent,
-    },
+  components: {
+    JobComponent,
+    JobNameComponent,
+  },
 
-    props: {
-      job: {
-        type: Object,
-        required: true,
-      },
+  props: {
+    job: {
+      type: Object,
+      required: true,
     },
-
-    computed: {
-      tooltipText() {
-        return `${this.job.name} - ${this.job.status.label}`;
-      },
+    requestFinishedFor: {
+      type: String,
+      required: false,
+      default: '',
     },
+  },
 
-    mounted() {
-      this.stopDropdownClickPropagation();
+  computed: {
+    tooltipText() {
+      return `${this.job.name} - ${this.job.status.label}`;
     },
+  },
+
+  mounted() {
+    this.stopDropdownClickPropagation();
+  },
 
-    methods: {
-      /**
-     * When the user right clicks or cmd/ctrl + click in the job name
-     * the dropdown should not be closed and the link should open in another tab,
-     * so we stop propagation of the click event inside the dropdown.
+  methods: {
+    /**
+     * When the user right clicks or cmd/ctrl + click in the job name or the action icon
+     * the dropdown should not be closed so we stop propagation
+     * of the click event inside the dropdown.
      *
      * Since this component is rendered multiple times per page we need to guarantee we only
      * target the click event of this component.
      */
-      stopDropdownClickPropagation() {
-        $(this.$el
-          .querySelectorAll('.js-grouped-pipeline-dropdown a.mini-pipeline-graph-dropdown-item'))
-          .on('click', (e) => {
-            e.stopPropagation();
-          });
-      },
+    stopDropdownClickPropagation() {
+      $(
+        '.js-grouped-pipeline-dropdown button, .js-grouped-pipeline-dropdown a.mini-pipeline-graph-dropdown-item',
+        this.$el,
+      ).on('click', e => {
+        e.stopPropagation();
+      });
     },
-  };
+  },
+};
 </script>
 <template>
   <div class="ci-job-dropdown-container">
@@ -101,8 +107,8 @@
             :key="i">
             <job-component
               :job="item"
-              :is-dropdown="true"
               css-class-job-name="mini-pipeline-graph-dropdown-item"
+              :request-finished-for="requestFinishedFor"
             />
           </li>
         </ul>
diff --git a/app/assets/javascripts/pipelines/components/graph/graph_component.vue b/app/assets/javascripts/pipelines/components/graph/graph_component.vue
index ac9ce7e47d6..7b8a5edcbff 100644
--- a/app/assets/javascripts/pipelines/components/graph/graph_component.vue
+++ b/app/assets/javascripts/pipelines/components/graph/graph_component.vue
@@ -7,7 +7,6 @@ export default {
     StageColumnComponent,
     LoadingIcon,
   },
-
   props: {
     isLoading: {
       type: Boolean,
@@ -17,10 +16,10 @@ export default {
       type: Object,
       required: true,
     },
-    actionDisabled: {
+    requestFinishedFor: {
       type: String,
       required: false,
-      default: null,
+      default: '',
     },
   },
 
@@ -75,7 +74,7 @@ export default {
           :key="stage.name"
           :stage-connector-class="stageConnectorClass(index, stage)"
           :is-first-column="isFirstColumn(index)"
-          :action-disabled="actionDisabled"
+          :request-finished-for="requestFinishedFor"
         />
       </ul>
     </div>
diff --git a/app/assets/javascripts/pipelines/components/graph/job_component.vue b/app/assets/javascripts/pipelines/components/graph/job_component.vue
index c6e5ae6df41..4fcd4b79f4a 100644
--- a/app/assets/javascripts/pipelines/components/graph/job_component.vue
+++ b/app/assets/javascripts/pipelines/components/graph/job_component.vue
@@ -1,6 +1,5 @@
 <script>
 import ActionComponent from './action_component.vue';
-import DropdownActionComponent from './dropdown_action_component.vue';
 import JobNameComponent from './job_name_component.vue';
 import tooltip from '../../../vue_shared/directives/tooltip';
 
@@ -32,10 +31,8 @@ import tooltip from '../../../vue_shared/directives/tooltip';
 export default {
   components: {
     ActionComponent,
-    DropdownActionComponent,
     JobNameComponent,
   },
-
   directives: {
     tooltip,
   },
@@ -44,26 +41,17 @@ export default {
       type: Object,
       required: true,
     },
-
     cssClassJobName: {
       type: String,
       required: false,
       default: '',
     },
-
-    isDropdown: {
-      type: Boolean,
-      required: false,
-      default: false,
-    },
-
-    actionDisabled: {
+    requestFinishedFor: {
       type: String,
       required: false,
-      default: null,
+      default: '',
     },
   },
-
   computed: {
     status() {
       return this.job && this.job.status ? this.job.status : {};
@@ -134,19 +122,11 @@ export default {
     </div>
 
     <action-component
-      v-if="hasAction && !isDropdown"
-      :tooltip-text="status.action.title"
-      :link="status.action.path"
-      :action-icon="status.action.icon"
-      :button-disabled="actionDisabled"
-    />
-
-    <dropdown-action-component
-      v-if="hasAction && isDropdown"
+      v-if="hasAction"
       :tooltip-text="status.action.title"
       :link="status.action.path"
       :action-icon="status.action.icon"
-      :action-method="status.action.method"
+      :request-finished-for="requestFinishedFor"
     />
   </div>
 </template>
diff --git a/app/assets/javascripts/pipelines/components/graph/stage_column_component.vue b/app/assets/javascripts/pipelines/components/graph/stage_column_component.vue
index f6e6569e15b..5461fdbbadd 100644
--- a/app/assets/javascripts/pipelines/components/graph/stage_column_component.vue
+++ b/app/assets/javascripts/pipelines/components/graph/stage_column_component.vue
@@ -29,10 +29,11 @@ export default {
       required: false,
       default: '',
     },
-    actionDisabled: {
+
+    requestFinishedFor: {
       type: String,
       required: false,
-      default: null,
+      default: '',
     },
   },
 
@@ -74,12 +75,12 @@ export default {
             v-if="job.size === 1"
             :job="job"
             css-class-job-name="build-content"
-            :action-disabled="actionDisabled"
           />
 
           <dropdown-job-component
             v-if="job.size > 1"
             :job="job"
+            :request-finished-for="requestFinishedFor"
           />
 
         </li>
diff --git a/app/assets/javascripts/pipelines/pipeline_details_bundle.js b/app/assets/javascripts/pipelines/pipeline_details_bundle.js
index 900eb7855f4..6584f96130b 100644
--- a/app/assets/javascripts/pipelines/pipeline_details_bundle.js
+++ b/app/assets/javascripts/pipelines/pipeline_details_bundle.js
@@ -25,7 +25,7 @@ export default () => {
     data() {
       return {
         mediator,
-        actionDisabled: null,
+        requestFinishedFor: null,
       };
     },
     created() {
@@ -36,15 +36,17 @@ export default () => {
     },
     methods: {
       postAction(action) {
-        this.actionDisabled = action;
+        // Click was made, reset this variable
+        this.requestFinishedFor = null;
 
-        this.mediator.service.postAction(action)
+        this.mediator.service
+          .postAction(action)
           .then(() => {
             this.mediator.refreshPipeline();
-            this.actionDisabled = null;
+            this.requestFinishedFor = action;
           })
           .catch(() => {
-            this.actionDisabled = null;
+            this.requestFinishedFor = action;
             Flash(__('An error occurred while making the request.'));
           });
       },
@@ -54,7 +56,7 @@ export default () => {
         props: {
           isLoading: this.mediator.state.isLoading,
           pipeline: this.mediator.store.state.pipeline,
-          actionDisabled: this.actionDisabled,
+          requestFinishedFor: this.requestFinishedFor,
         },
       });
     },
@@ -79,7 +81,8 @@ export default () => {
     },
     methods: {
       postAction(action) {
-        this.mediator.service.postAction(action.path)
+        this.mediator.service
+          .postAction(action.path)
           .then(() => this.mediator.refreshPipeline())
           .catch(() => Flash(__('An error occurred while making the request.')));
       },
diff --git a/app/assets/javascripts/right_sidebar.js b/app/assets/javascripts/right_sidebar.js
index 2088a49590a..6eb0b62fa1c 100644
--- a/app/assets/javascripts/right_sidebar.js
+++ b/app/assets/javascripts/right_sidebar.js
@@ -5,6 +5,7 @@ import _ from 'underscore';
 import Cookies from 'js-cookie';
 import flash from './flash';
 import axios from './lib/utils/axios_utils';
+import { __ } from './locale';
 
 function Sidebar(currentUser) {
   this.toggleTodo = this.toggleTodo.bind(this);
@@ -41,12 +42,14 @@ Sidebar.prototype.addEventListeners = function() {
 };
 
 Sidebar.prototype.sidebarToggleClicked = function (e, triggered) {
-  var $allGutterToggleIcons, $this, $thisIcon;
+  var $allGutterToggleIcons, $this, isExpanded, tooltipLabel;
   e.preventDefault();
   $this = $(this);
-  $thisIcon = $this.find('i');
+  isExpanded = $this.find('i').hasClass('fa-angle-double-right');
+  tooltipLabel = isExpanded ? __('Expand sidebar') : __('Collapse sidebar');
   $allGutterToggleIcons = $('.js-sidebar-toggle i');
-  if ($thisIcon.hasClass('fa-angle-double-right')) {
+
+  if (isExpanded) {
     $allGutterToggleIcons.removeClass('fa-angle-double-right').addClass('fa-angle-double-left');
     $('aside.right-sidebar').removeClass('right-sidebar-expanded').addClass('right-sidebar-collapsed');
     $('.layout-page').removeClass('right-sidebar-expanded').addClass('right-sidebar-collapsed');
@@ -57,6 +60,9 @@ Sidebar.prototype.sidebarToggleClicked = function (e, triggered) {
 
     if (gl.lazyLoader) gl.lazyLoader.loadCheck();
   }
+
+  $this.attr('data-original-title', tooltipLabel);
+
   if (!triggered) {
     Cookies.set("collapsed_gutter", $('.right-sidebar').hasClass('right-sidebar-collapsed'));
   }
diff --git a/app/assets/javascripts/sidebar/components/assignees/assignees.vue b/app/assets/javascripts/sidebar/components/assignees/assignees.vue
index 1e7f46454bf..2d00e8ac7e0 100644
--- a/app/assets/javascripts/sidebar/components/assignees/assignees.vue
+++ b/app/assets/javascripts/sidebar/components/assignees/assignees.vue
@@ -1,6 +1,12 @@
 <script>
+import { __ } from '~/locale';
+import tooltip from '~/vue_shared/directives/tooltip';
+
 export default {
   name: 'Assignees',
+  directives: {
+    tooltip,
+  },
   props: {
     rootPath: {
       type: String,
@@ -14,6 +20,11 @@ export default {
       type: Boolean,
       required: true,
     },
+    issuableType: {
+      type: String,
+      require: true,
+      default: 'issue',
+    },
   },
   data() {
     return {
@@ -62,6 +73,12 @@ export default {
         names.push(`+ ${this.users.length - maxRender} more`);
       }
 
+      if (!this.users.length) {
+        const emptyTooltipLabel = this.issuableType === 'issue' ?
+          __('Assignee(s)') : __('Assignee');
+        names.push(emptyTooltipLabel);
+      }
+
       return names.join(', ');
     },
     sidebarAvatarCounter() {
@@ -109,7 +126,8 @@ export default {
   <div>
     <div
       class="sidebar-collapsed-icon sidebar-collapsed-user"
-      :class="{ 'multiple-users': hasMoreThanOneAssignee, 'has-tooltip': hasAssignees }"
+      :class="{ 'multiple-users': hasMoreThanOneAssignee }"
+      v-tooltip
       data-container="body"
       data-placement="left"
       :title="collapsedTooltipTitle"
diff --git a/app/assets/javascripts/sidebar/components/assignees/sidebar_assignees.vue b/app/assets/javascripts/sidebar/components/assignees/sidebar_assignees.vue
index 3c6b9c27814..b04a2eff798 100644
--- a/app/assets/javascripts/sidebar/components/assignees/sidebar_assignees.vue
+++ b/app/assets/javascripts/sidebar/components/assignees/sidebar_assignees.vue
@@ -1,9 +1,9 @@
 <script>
-import Flash from '../../../flash';
+import Flash from '~/flash';
+import eventHub from '~/sidebar/event_hub';
+import Store from '~/sidebar/stores/sidebar_store';
 import AssigneeTitle from './assignee_title.vue';
 import Assignees from './assignees.vue';
-import Store from '../../stores/sidebar_store';
-import eventHub from '../../event_hub';
 
 export default {
   name: 'SidebarAssignees',
@@ -25,6 +25,11 @@ export default {
       required: false,
       default: false,
     },
+    issuableType: {
+      type: String,
+      require: true,
+      default: 'issue',
+    },
   },
   data() {
     return {
@@ -90,6 +95,7 @@ export default {
       :users="store.assignees"
       :editable="store.editable"
       @assign-self="assignSelf"
+      :issuable-type="issuableType"
     />
   </div>
 </template>
diff --git a/app/assets/javascripts/sidebar/components/confidential/confidential_issue_sidebar.vue b/app/assets/javascripts/sidebar/components/confidential/confidential_issue_sidebar.vue
index ceb02309959..7f0de722f61 100644
--- a/app/assets/javascripts/sidebar/components/confidential/confidential_issue_sidebar.vue
+++ b/app/assets/javascripts/sidebar/components/confidential/confidential_issue_sidebar.vue
@@ -1,15 +1,19 @@
 <script>
-import Flash from '../../../flash';
+import { __ } from '~/locale';
+import Flash from '~/flash';
+import tooltip from '~/vue_shared/directives/tooltip';
+import Icon from '~/vue_shared/components/icon.vue';
+import eventHub from '~/sidebar/event_hub';
 import editForm from './edit_form.vue';
-import Icon from '../../../vue_shared/components/icon.vue';
-import { __ } from '../../../locale';
-import eventHub from '../../event_hub';
 
 export default {
   components: {
     editForm,
     Icon,
   },
+  directives: {
+    tooltip,
+  },
   props: {
     isConfidential: {
       required: true,
@@ -33,6 +37,9 @@ export default {
     confidentialityIcon() {
       return this.isConfidential ? 'eye-slash' : 'eye';
     },
+    tooltipLabel() {
+      return this.isConfidential ? __('Confidential') : __('Not confidential');
+    },
   },
   created() {
     eventHub.$on('closeConfidentialityForm', this.toggleForm);
@@ -65,6 +72,10 @@ export default {
     <div
       class="sidebar-collapsed-icon"
       @click="toggleForm"
+      v-tooltip
+      data-container="body"
+      data-placement="left"
+      :title="tooltipLabel"
     >
       <icon
         :name="confidentialityIcon"
diff --git a/app/assets/javascripts/sidebar/components/lock/lock_issue_sidebar.vue b/app/assets/javascripts/sidebar/components/lock/lock_issue_sidebar.vue
index e4893451af3..1a5e7b67eca 100644
--- a/app/assets/javascripts/sidebar/components/lock/lock_issue_sidebar.vue
+++ b/app/assets/javascripts/sidebar/components/lock/lock_issue_sidebar.vue
@@ -1,15 +1,22 @@
 <script>
+import { __ } from '~/locale';
 import Flash from '~/flash';
+import tooltip from '~/vue_shared/directives/tooltip';
+import issuableMixin from '~/vue_shared/mixins/issuable';
+import Icon from '~/vue_shared/components/icon.vue';
+import eventHub from '~/sidebar/event_hub';
 import editForm from './edit_form.vue';
-import issuableMixin from '../../../vue_shared/mixins/issuable';
-import Icon from '../../../vue_shared/components/icon.vue';
-import eventHub from '../../event_hub';
 
 export default {
   components: {
     editForm,
     Icon,
   },
+
+  directives: {
+    tooltip,
+  },
+
   mixins: [issuableMixin],
 
   props: {
@@ -44,6 +51,10 @@ export default {
     isLockDialogOpen() {
       return this.mediator.store.isLockDialogOpen;
     },
+
+    tooltipLabel() {
+      return this.isLocked ? __('Locked') : __('Unlocked');
+    },
   },
 
   created() {
@@ -85,6 +96,10 @@ export default {
     <div
       class="sidebar-collapsed-icon"
       @click="toggleForm"
+      v-tooltip
+      data-container="body"
+      data-placement="left"
+      :title="tooltipLabel"
     >
       <icon
         :name="lockIcon"
diff --git a/app/assets/javascripts/sidebar/components/participants/participants.vue b/app/assets/javascripts/sidebar/components/participants/participants.vue
index 006a6d2905d..6d95153af28 100644
--- a/app/assets/javascripts/sidebar/components/participants/participants.vue
+++ b/app/assets/javascripts/sidebar/components/participants/participants.vue
@@ -1,9 +1,13 @@
 <script>
-  import { __, n__, sprintf } from '../../../locale';
-  import loadingIcon from '../../../vue_shared/components/loading_icon.vue';
-  import userAvatarImage from '../../../vue_shared/components/user_avatar/user_avatar_image.vue';
+  import { __, n__, sprintf } from '~/locale';
+  import tooltip from '~/vue_shared/directives/tooltip';
+  import loadingIcon from '~/vue_shared/components/loading_icon.vue';
+  import userAvatarImage from '~/vue_shared/components/user_avatar/user_avatar_image.vue';
 
   export default {
+    directives: {
+      tooltip,
+    },
     components: {
       loadingIcon,
       userAvatarImage,
@@ -72,7 +76,13 @@
 
 <template>
   <div>
-    <div class="sidebar-collapsed-icon">
+    <div
+      class="sidebar-collapsed-icon"
+      v-tooltip
+      data-container="body"
+      data-placement="left"
+      :title="participantLabel"
+    >
       <i
         class="fa fa-users"
         aria-hidden="true"
diff --git a/app/assets/javascripts/sidebar/components/time_tracking/collapsed_state.vue b/app/assets/javascripts/sidebar/components/time_tracking/collapsed_state.vue
index 3b86f1145d1..9d9ee9dea4d 100644
--- a/app/assets/javascripts/sidebar/components/time_tracking/collapsed_state.vue
+++ b/app/assets/javascripts/sidebar/components/time_tracking/collapsed_state.vue
@@ -1,12 +1,17 @@
 <script>
-  import icon from '../../../vue_shared/components/icon.vue';
-  import { abbreviateTime } from '../../../lib/utils/pretty_time';
+  import { __, sprintf } from '~/locale';
+  import { abbreviateTime } from '~/lib/utils/pretty_time';
+  import icon from '~/vue_shared/components/icon.vue';
+  import tooltip from '~/vue_shared/directives/tooltip';
 
   export default {
     name: 'TimeTrackingCollapsedState',
     components: {
       icon,
     },
+    directives: {
+      tooltip,
+    },
     props: {
       showComparisonState: {
         type: Boolean,
@@ -79,6 +84,21 @@
 
         return '';
       },
+      timeTrackedTooltipText() {
+        let title;
+        if (this.showComparisonState) {
+          title = __('Time remaining');
+        } else if (this.showEstimateOnlyState) {
+          title = __('Estimated');
+        } else if (this.showSpentOnlyState) {
+          title = __('Time spent');
+        }
+
+        return sprintf('%{title}: %{text}', ({ title, text: this.text }));
+      },
+      tooltipText() {
+        return this.showNoTimeTrackingState ? __('Time tracking') : this.timeTrackedTooltipText;
+      },
     },
     methods: {
       abbreviateTime(timeStr) {
@@ -89,7 +109,13 @@
 </script>
 
 <template>
-  <div class="sidebar-collapsed-icon">
+  <div
+    class="sidebar-collapsed-icon"
+    v-tooltip
+    data-container="body"
+    data-placement="left"
+    :title="tooltipText"
+  >
     <icon name="timer" />
     <div class="time-tracking-collapsed-summary">
       <div :class="divClass">
diff --git a/app/assets/javascripts/sidebar/mount_sidebar.js b/app/assets/javascripts/sidebar/mount_sidebar.js
index 9f5d852260e..26eb4cffba3 100644
--- a/app/assets/javascripts/sidebar/mount_sidebar.js
+++ b/app/assets/javascripts/sidebar/mount_sidebar.js
@@ -27,6 +27,7 @@ function mountAssigneesComponent(mediator) {
         mediator,
         field: el.dataset.field,
         signedIn: el.hasAttribute('data-signed-in'),
+        issuableType: gl.utils.isInIssuePage() ? 'issue' : 'merge_request',
       },
     }),
   });
diff --git a/app/assets/javascripts/users_select.js b/app/assets/javascripts/users_select.js
index 520a0b3f424..8486019897d 100644
--- a/app/assets/javascripts/users_select.js
+++ b/app/assets/javascripts/users_select.js
@@ -5,6 +5,7 @@
 import $ from 'jquery';
 import _ from 'underscore';
 import axios from './lib/utils/axios_utils';
+import { __ } from './locale';
 import ModalStore from './boards/stores/modal_store';
 
 // TODO: remove eventHub hack after code splitting refactor
@@ -182,7 +183,7 @@ function UsersSelect(currentUser, els, options = {}) {
 
         return axios.put(issueURL, data)
           .then(({ data }) => {
-            var user;
+            var user, tooltipTitle;
             $dropdown.trigger('loaded.gl.dropdown');
             $loading.fadeOut();
             if (data.assignee) {
@@ -191,15 +192,17 @@ function UsersSelect(currentUser, els, options = {}) {
                 username: data.assignee.username,
                 avatar: data.assignee.avatar_url
               };
+              tooltipTitle = _.escape(user.name);
             } else {
               user = {
                 name: 'Unassigned',
                 username: '',
                 avatar: ''
               };
+              tooltipTitle = __('Assignee');
             }
             $value.html(assigneeTemplate(user));
-            $collapsedSidebar.attr('title', _.escape(user.name)).tooltip('fixTitle');
+            $collapsedSidebar.attr('title', tooltipTitle).tooltip('fixTitle');
             return $collapsedSidebar.html(collapsedAssigneeTemplate(user));
           });
       };
diff --git a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_pipeline_failed.js b/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_pipeline_failed.js
deleted file mode 100644
index 4d9a2ca530f..00000000000
--- a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_pipeline_failed.js
+++ /dev/null
@@ -1,18 +0,0 @@
-import statusIcon from '../mr_widget_status_icon.vue';
-
-export default {
-  name: 'MRWidgetPipelineBlocked',
-  components: {
-    statusIcon,
-  },
-  template: `
-    <div class="mr-widget-body media">
-      <status-icon status="warning" :show-disabled-button="true" />
-      <div class="media-body space-children">
-        <span class="bold">
-          The pipeline for this merge request failed. Please retry the job or push a new commit to fix the failure
-        </span>
-      </div>
-    </div>
-  `,
-};
diff --git a/app/assets/javascripts/vue_merge_request_widget/components/states/pipeline_failed.vue b/app/assets/javascripts/vue_merge_request_widget/components/states/pipeline_failed.vue
new file mode 100644
index 00000000000..8d55477929f
--- /dev/null
+++ b/app/assets/javascripts/vue_merge_request_widget/components/states/pipeline_failed.vue
@@ -0,0 +1,25 @@
+<script>
+import statusIcon from '../mr_widget_status_icon.vue';
+
+export default {
+  name: 'PipelineFailed',
+  components: {
+    statusIcon,
+  },
+};
+</script>
+
+<template>
+  <div class="mr-widget-body media">
+    <status-icon
+      status="warning"
+      :show-disabled-button="true"
+    />
+    <div class="media-body space-children">
+      <span class="bold">
+        {{ s__(`mrWidget|The pipeline for this merge request failed.
+Please retry the job or push a new commit to fix the failure`) }}
+      </span>
+    </div>
+  </div>
+</template>
diff --git a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_ready_to_merge.js b/app/assets/javascripts/vue_merge_request_widget/components/states/ready_to_merge.vue
index 3c781ccddc8..0264625a526 100644
--- a/app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_ready_to_merge.js
+++ b/app/assets/javascripts/vue_merge_request_widget/components/states/ready_to_merge.vue
@@ -1,3 +1,4 @@
+<script>
 import successSvg from 'icons/_icon_status_success.svg';
 import warningSvg from 'icons/_icon_status_warning.svg';
 import simplePoll from '~/lib/utils/simple_poll';
@@ -7,7 +8,10 @@ import statusIcon from '../mr_widget_status_icon.vue';
 import eventHub from '../../event_hub';
 
 export default {
-  name: 'MRWidgetReadyToMerge',
+  name: 'ReadyToMerge',
+  components: {
+    statusIcon,
+  },
   props: {
     mr: { type: Object, required: true },
     service: { type: Object, required: true },
@@ -26,9 +30,6 @@ export default {
       warningSvg,
     };
   },
-  components: {
-    statusIcon,
-  },
   computed: {
     shouldShowMergeWhenPipelineSucceedsText() {
       return this.mr.isPipelineActive;
@@ -217,136 +218,146 @@ export default {
         });
     },
   },
-  template: `
-    <div class="mr-widget-body media">
-      <status-icon :status="iconClass" />
-      <div class="media-body">
-        <div class="mr-widget-body-controls media space-children">
-          <span class="btn-group append-bottom-5">
-            <button
-              @click="handleMergeButtonClick()"
-              :disabled="isMergeButtonDisabled"
-              :class="mergeButtonClass"
-              type="button"
-              class="qa-merge-button">
-              <i
-                v-if="isMakingRequest"
-                class="fa fa-spinner fa-spin"
-                aria-hidden="true" />
-              {{mergeButtonText}}
-            </button>
+};
+</script>
+
+<template>
+  <div class="mr-widget-body media">
+    <status-icon :status="iconClass" />
+    <div class="media-body">
+      <div class="mr-widget-body-controls media space-children">
+        <span class="btn-group append-bottom-5">
+          <button
+            @click="handleMergeButtonClick()"
+            :disabled="isMergeButtonDisabled"
+            :class="mergeButtonClass"
+            type="button"
+            class="qa-merge-button">
+            <i
+              v-if="isMakingRequest"
+              class="fa fa-spinner fa-spin"
+              aria-hidden="true"
+            ></i>
+            {{ mergeButtonText }}
+          </button>
+          <button
+            v-if="shouldShowMergeOptionsDropdown"
+            :disabled="isMergeButtonDisabled"
+            type="button"
+            class="btn btn-sm btn-info dropdown-toggle js-merge-moment"
+            data-toggle="dropdown"
+            aria-label="Select merge moment">
+            <i
+              class="fa fa-chevron-down"
+              aria-hidden="true"
+            ></i>
+          </button>
+          <ul
+            v-if="shouldShowMergeOptionsDropdown"
+            class="dropdown-menu dropdown-menu-right"
+            role="menu">
+            <li>
+              <a
+                @click.prevent="handleMergeButtonClick(true)"
+                class="merge_when_pipeline_succeeds"
+                href="#">
+                <span class="media">
+                  <span
+                    v-html="successSvg"
+                    class="merge-opt-icon"
+                    aria-hidden="true"></span>
+                  <span class="media-body merge-opt-title">Merge when pipeline succeeds</span>
+                </span>
+              </a>
+            </li>
+            <li>
+              <a
+                @click.prevent="handleMergeButtonClick(false, true)"
+                class="accept-merge-request"
+                href="#">
+                <span class="media">
+                  <span
+                    v-html="warningSvg"
+                    class="merge-opt-icon"
+                    aria-hidden="true"></span>
+                  <span class="media-body merge-opt-title">Merge immediately</span>
+                </span>
+              </a>
+            </li>
+          </ul>
+        </span>
+        <div class="media-body-wrap space-children">
+          <template v-if="shouldShowMergeControls()">
+            <label v-if="mr.canRemoveSourceBranch">
+              <input
+                id="remove-source-branch-input"
+                v-model="removeSourceBranch"
+                class="js-remove-source-branch-checkbox"
+                :disabled="isRemoveSourceBranchButtonDisabled"
+                type="checkbox"/> Remove source branch
+            </label>
+
+            <!-- Placeholder for EE extension of this component -->
+            <squash-before-merge
+              v-if="shouldShowSquashBeforeMerge"
+              :mr="mr"
+              :is-merge-button-disabled="isMergeButtonDisabled" />
+
+            <span
+              v-if="mr.ffOnlyEnabled"
+              class="js-fast-forward-message">
+              Fast-forward merge without a merge commit
+            </span>
             <button
-              v-if="shouldShowMergeOptionsDropdown"
+              v-else
+              @click="toggleCommitMessageEditor"
               :disabled="isMergeButtonDisabled"
-              type="button"
-              class="btn btn-sm btn-info dropdown-toggle js-merge-moment"
-              data-toggle="dropdown"
-              aria-label="Select merge moment">
-              <i
-                class="fa fa-chevron-down"
-                aria-hidden="true" />
+              class="js-modify-commit-message-button btn btn-default btn-xs"
+              type="button">
+              Modify commit message
             </button>
-            <ul
-              v-if="shouldShowMergeOptionsDropdown"
-              class="dropdown-menu dropdown-menu-right"
-              role="menu">
-              <li>
-                <a
-                  @click.prevent="handleMergeButtonClick(true)"
-                  class="merge_when_pipeline_succeeds"
-                  href="#">
-                  <span class="media">
-                    <span
-                      v-html="successSvg"
-                      class="merge-opt-icon"
-                      aria-hidden="true"></span>
-                    <span class="media-body merge-opt-title">Merge when pipeline succeeds</span>
-                  </span>
-                </a>
-              </li>
-              <li>
-                <a
-                  @click.prevent="handleMergeButtonClick(false, true)"
-                  class="accept-merge-request"
-                  href="#">
-                  <span class="media">
-                    <span
-                      v-html="warningSvg"
-                      class="merge-opt-icon"
-                      aria-hidden="true"></span>
-                    <span class="media-body merge-opt-title">Merge immediately</span>
-                  </span>
-                </a>
-              </li>
-            </ul>
-          </span>
-          <div class="media-body-wrap space-children">
-            <template v-if="shouldShowMergeControls()">
-              <label v-if="mr.canRemoveSourceBranch">
-                <input
-                  id="remove-source-branch-input"
-                  v-model="removeSourceBranch"
-                  class="js-remove-source-branch-checkbox"
-                  :disabled="isRemoveSourceBranchButtonDisabled"
-                  type="checkbox"/> Remove source branch
-              </label>
-
-              <!-- Placeholder for EE extension of this component -->
-              <squash-before-merge
-                v-if="shouldShowSquashBeforeMerge"
-                :mr="mr"
-                :is-merge-button-disabled="isMergeButtonDisabled" />
-
-              <span
-                v-if="mr.ffOnlyEnabled"
-                class="js-fast-forward-message">
-                Fast-forward merge without a merge commit
-              </span>
-              <button
-                v-else
-                @click="toggleCommitMessageEditor"
-                :disabled="isMergeButtonDisabled"
-                class="js-modify-commit-message-button btn btn-default btn-xs"
-                type="button">
-                Modify commit message
-              </button>
-            </template>
-            <template v-else>
-              <span class="bold js-resolve-mr-widget-items-message">
-                You can only merge once the items above are resolved
-              </span>
-            </template>
-          </div>
+          </template>
+          <template v-else>
+            <span class="bold js-resolve-mr-widget-items-message">
+              You can only merge once the items above are resolved
+            </span>
+          </template>
         </div>
-        <div
-          v-if="showCommitMessageEditor"
-          class="prepend-top-default commit-message-editor">
-          <div class="form-group clearfix">
-            <label
-              class="control-label"
-              for="commit-message">
-              Commit message
-            </label>
-            <div class="col-sm-10">
-              <div class="commit-message-container">
-                <div class="max-width-marker"></div>
-                <textarea
-                  v-model="commitMessage"
-                  class="form-control js-commit-message"
-                  required="required"
-                  rows="14"
-                  name="Commit message"></textarea>
-              </div>
-              <p class="hint">Try to keep the first line under 52 characters and the others under 72</p>
-              <div class="hint">
-                <a
-                  @click.prevent="updateCommitMessage"
-                  href="#">{{commitMessageLinkTitle}}</a>
-              </div>
+      </div>
+      <div
+        v-if="showCommitMessageEditor"
+        class="prepend-top-default commit-message-editor">
+        <div class="form-group clearfix">
+          <label
+            class="control-label"
+            for="commit-message">
+            Commit message
+          </label>
+          <div class="col-sm-10">
+            <div class="commit-message-container">
+              <div class="max-width-marker"></div>
+              <textarea
+                id="commit-message"
+                v-model="commitMessage"
+                class="form-control js-commit-message"
+                required="required"
+                rows="14"
+                name="Commit message"></textarea>
+            </div>
+            <p class="hint">
+              Try to keep the first line under 52 characters and the others under 72
+            </p>
+            <div class="hint">
+              <a
+                @click.prevent="updateCommitMessage"
+                href="#"
+              >
+                {{ commitMessageLinkTitle }}
+              </a>
             </div>
           </div>
         </div>
       </div>
     </div>
-  `,
-};
+  </div>
+</template>
diff --git a/app/assets/javascripts/vue_merge_request_widget/dependencies.js b/app/assets/javascripts/vue_merge_request_widget/dependencies.js
index ed15fc6ab0f..3b5c973e4a0 100644
--- a/app/assets/javascripts/vue_merge_request_widget/dependencies.js
+++ b/app/assets/javascripts/vue_merge_request_widget/dependencies.js
@@ -27,11 +27,11 @@ export { default as ConflictsState } from './components/states/mr_widget_conflic
 export { default as NothingToMergeState } from './components/states/nothing_to_merge.vue';
 export { default as MissingBranchState } from './components/states/mr_widget_missing_branch.vue';
 export { default as NotAllowedState } from './components/states/mr_widget_not_allowed.vue';
-export { default as ReadyToMergeState } from './components/states/mr_widget_ready_to_merge';
+export { default as ReadyToMergeState } from './components/states/ready_to_merge.vue';
 export { default as ShaMismatchState } from './components/states/sha_mismatch.vue';
 export { default as UnresolvedDiscussionsState } from './components/states/unresolved_discussions.vue';
 export { default as PipelineBlockedState } from './components/states/mr_widget_pipeline_blocked.vue';
-export { default as PipelineFailedState } from './components/states/mr_widget_pipeline_failed';
+export { default as PipelineFailedState } from './components/states/pipeline_failed.vue';
 export { default as MergeWhenPipelineSucceedsState } from './components/states/mr_widget_merge_when_pipeline_succeeds.vue';
 export { default as RebaseState } from './components/states/mr_widget_rebase.vue';
 export { default as AutoMergeFailed } from './components/states/mr_widget_auto_merge_failed.vue';
diff --git a/app/assets/javascripts/vue_shared/components/callout.vue b/app/assets/javascripts/vue_shared/components/callout.vue
new file mode 100644
index 00000000000..ccf802c456c
--- /dev/null
+++ b/app/assets/javascripts/vue_shared/components/callout.vue
@@ -0,0 +1,27 @@
+<script>
+const calloutVariants = ['danger', 'success', 'info', 'warning'];
+
+export default {
+  props: {
+    category: {
+      type: String,
+      required: false,
+      default: calloutVariants[0],
+      validator: value => calloutVariants.includes(value),
+    },
+    message: {
+      type: String,
+      required: true,
+    },
+  },
+};
+</script>
+<template>
+  <div
+    :class="`bs-callout bs-callout-${category}`"
+    role="alert"
+    aria-live="assertive"
+  >
+    {{ message }}
+  </div>
+</template>
diff --git a/app/assets/javascripts/vue_shared/components/ci_badge_link.vue b/app/assets/javascripts/vue_shared/components/ci_badge_link.vue
index 5324d5dc797..0d64efcbf68 100644
--- a/app/assets/javascripts/vue_shared/components/ci_badge_link.vue
+++ b/app/assets/javascripts/vue_shared/components/ci_badge_link.vue
@@ -1,52 +1,52 @@
 <script>
-  import ciIcon from './ci_icon.vue';
-  import tooltip from '../directives/tooltip';
-  /**
-   * Renders CI Badge link with CI icon and status text based on
-   * API response shared between all places where it is used.
-   *
-   * Receives status object containing:
-   * status: {
-   *   details_path: "/gitlab-org/gitlab-ce/pipelines/8150156" // url
-   *   group:"running" // used for CSS class
-   *   icon: "icon_status_running" // used to render the icon
-   *   label:"running" // used for potential tooltip
-   *   text:"running" // text rendered
-   * }
-   *
-   * Used in:
-   * - Pipelines table - first column
-   * - Jobs table - first column
-   * - Pipeline show view - header
-   * - Job show view - header
-   * - MR widget
-   */
+import CiIcon from './ci_icon.vue';
+import tooltip from '../directives/tooltip';
+/**
+ * Renders CI Badge link with CI icon and status text based on
+ * API response shared between all places where it is used.
+ *
+ * Receives status object containing:
+ * status: {
+ *   details_path: "/gitlab-org/gitlab-ce/pipelines/8150156" // url
+ *   group:"running" // used for CSS class
+ *   icon: "icon_status_running" // used to render the icon
+ *   label:"running" // used for potential tooltip
+ *   text:"running" // text rendered
+ * }
+ *
+ * Used in:
+ * - Pipelines table - first column
+ * - Jobs table - first column
+ * - Pipeline show view - header
+ * - Job show view - header
+ * - MR widget
+ */
 
-  export default {
-    components: {
-      ciIcon,
+export default {
+  components: {
+    CiIcon,
+  },
+  directives: {
+    tooltip,
+  },
+  props: {
+    status: {
+      type: Object,
+      required: true,
     },
-    directives: {
-      tooltip,
+    showText: {
+      type: Boolean,
+      required: false,
+      default: true,
     },
-    props: {
-      status: {
-        type: Object,
-        required: true,
-      },
-      showText: {
-        type: Boolean,
-        required: false,
-        default: true,
-      },
+  },
+  computed: {
+    cssClass() {
+      const className = this.status.group;
+      return className ? `ci-status ci-${className}` : 'ci-status';
     },
-    computed: {
-      cssClass() {
-        const className = this.status.group;
-        return className ? `ci-status ci-${className}` : 'ci-status';
-      },
-    },
-  };
+  },
+};
 </script>
 <template>
   <a
diff --git a/app/assets/javascripts/vue_shared/components/ci_icon.vue b/app/assets/javascripts/vue_shared/components/ci_icon.vue
index 8fea746f4de..fcab8f571dd 100644
--- a/app/assets/javascripts/vue_shared/components/ci_icon.vue
+++ b/app/assets/javascripts/vue_shared/components/ci_icon.vue
@@ -1,45 +1,44 @@
 <script>
-  import icon from '../../vue_shared/components/icon.vue';
+import Icon from '../../vue_shared/components/icon.vue';
 
-  /**
-   * Renders CI icon based on API response shared between all places where it is used.
-   *
-   * Receives status object containing:
-   * status: {
-   *   details_path: "/gitlab-org/gitlab-ce/pipelines/8150156" // url
-   *   group:"running" // used for CSS class
-   *   icon: "icon_status_running" // used to render the icon
-   *   label:"running" // used for potential tooltip
-   *   text:"running" // text rendered
-   * }
-   *
-   * Used in:
-   * - Pipelines table Badge
-   * - Pipelines table mini graph
-   * - Pipeline graph
-   * - Pipeline show view badge
-   * - Jobs table
-   * - Jobs show view header
-   * - Jobs show view sidebar
-   */
-  export default {
-    components: {
-      icon,
+/**
+ * Renders CI icon based on API response shared between all places where it is used.
+ *
+ * Receives status object containing:
+ * status: {
+ *   details_path: "/gitlab-org/gitlab-ce/pipelines/8150156" // url
+ *   group:"running" // used for CSS class
+ *   icon: "icon_status_running" // used to render the icon
+ *   label:"running" // used for potential tooltip
+ *   text:"running" // text rendered
+ * }
+ *
+ * Used in:
+ * - Pipelines table Badge
+ * - Pipelines table mini graph
+ * - Pipeline graph
+ * - Pipeline show view badge
+ * - Jobs table
+ * - Jobs show view header
+ * - Jobs show view sidebar
+ */
+export default {
+  components: {
+    Icon,
+  },
+  props: {
+    status: {
+      type: Object,
+      required: true,
     },
-    props: {
-      status: {
-        type: Object,
-        required: true,
-      },
+  },
+  computed: {
+    cssClass() {
+      const status = this.status.group;
+      return `ci-status-icon ci-status-icon-${status} js-ci-status-icon-${status}`;
     },
-
-    computed: {
-      cssClass() {
-        const status = this.status.group;
-        return `ci-status-icon ci-status-icon-${status} js-ci-status-icon-${status}`;
-      },
-    },
-  };
+  },
+};
 </script>
 <template>
   <span :class="cssClass">
diff --git a/app/assets/javascripts/vue_shared/components/clipboard_button.vue b/app/assets/javascripts/vue_shared/components/clipboard_button.vue
index cab126a7eca..cb2cc3901ad 100644
--- a/app/assets/javascripts/vue_shared/components/clipboard_button.vue
+++ b/app/assets/javascripts/vue_shared/components/clipboard_button.vue
@@ -1,40 +1,50 @@
 <script>
-  /**
-   * Falls back to the code used in `copy_to_clipboard.js`
-   */
-  import tooltip from '../directives/tooltip';
+/**
+ * Falls back to the code used in `copy_to_clipboard.js`
+ *
+ * Renders a button with a clipboard icon that copies the content of `data-clipboard-text`
+ * when clicked.
+ *
+ * @example
+ * <clipboard-button
+ *   title="Copy to clipbard"
+ *   text="Content to be copied"
+ *    css-class="btn-transparent"
+ * />
+ */
+import tooltip from '../directives/tooltip';
 
-  export default {
-    name: 'ClipboardButton',
-    directives: {
-      tooltip,
+export default {
+  name: 'ClipboardButton',
+  directives: {
+    tooltip,
+  },
+  props: {
+    text: {
+      type: String,
+      required: true,
     },
-    props: {
-      text: {
-        type: String,
-        required: true,
-      },
-      title: {
-        type: String,
-        required: true,
-      },
-      tooltipPlacement: {
-        type: String,
-        required: false,
-        default: 'top',
-      },
-      tooltipContainer: {
-        type: [String, Boolean],
-        required: false,
-        default: false,
-      },
-      cssClass: {
-        type: String,
-        required: false,
-        default: 'btn-default',
-      },
+    title: {
+      type: String,
+      required: true,
     },
-  };
+    tooltipPlacement: {
+      type: String,
+      required: false,
+      default: 'top',
+    },
+    tooltipContainer: {
+      type: [String, Boolean],
+      required: false,
+      default: false,
+    },
+    cssClass: {
+      type: String,
+      required: false,
+      default: 'btn-default',
+    },
+  },
+};
 </script>
 
 <template>
diff --git a/app/assets/javascripts/vue_shared/components/commit.vue b/app/assets/javascripts/vue_shared/components/commit.vue
index 97789636787..8f250a6c989 100644
--- a/app/assets/javascripts/vue_shared/components/commit.vue
+++ b/app/assets/javascripts/vue_shared/components/commit.vue
@@ -1,119 +1,111 @@
 <script>
-  import commitIconSvg from 'icons/_icon_commit.svg';
-  import userAvatarLink from './user_avatar/user_avatar_link.vue';
-  import tooltip from '../directives/tooltip';
-  import icon from '../../vue_shared/components/icon.vue';
+import UserAvatarLink from './user_avatar/user_avatar_link.vue';
+import tooltip from '../directives/tooltip';
+import Icon from '../../vue_shared/components/icon.vue';
 
-  export default {
-    directives: {
-      tooltip,
+export default {
+  directives: {
+    tooltip,
+  },
+  components: {
+    UserAvatarLink,
+    Icon,
+  },
+  props: {
+    /**
+     * Indicates the existance of a tag.
+     * Used to render the correct icon, if true will render `fa-tag` icon,
+     * if false will render a svg sprite fork icon
+     */
+    tag: {
+      type: Boolean,
+      required: false,
+      default: false,
     },
-    components: {
-      userAvatarLink,
-      icon,
+    /**
+     * If provided is used to render the branch name and url.
+     * Should contain the following properties:
+     * name
+     * ref_url
+     */
+    commitRef: {
+      type: Object,
+      required: false,
+      default: () => ({}),
+    },
+    /**
+     * Used to link to the commit sha.
+     */
+    commitUrl: {
+      type: String,
+      required: false,
+      default: '',
     },
-    props: {
-      /**
-       * Indicates the existance of a tag.
-       * Used to render the correct icon, if true will render `fa-tag` icon,
-       * if false will render a svg sprite fork icon
-       */
-      tag: {
-        type: Boolean,
-        required: false,
-        default: false,
-      },
-      /**
-       * If provided is used to render the branch name and url.
-       * Should contain the following properties:
-       * name
-       * ref_url
-       */
-      commitRef: {
-        type: Object,
-        required: false,
-        default: () => ({}),
-      },
-      /**
-       * Used to link to the commit sha.
-       */
-      commitUrl: {
-        type: String,
-        required: false,
-        default: '',
-      },
 
-      /**
-       * Used to show the commit short sha that links to the commit url.
-       */
-      shortSha: {
-        type: String,
-        required: false,
-        default: '',
-      },
-      /**
-       * If provided shows the commit tile.
-       */
-      title: {
-        type: String,
-        required: false,
-        default: '',
-      },
-      /**
-       * If provided renders information about the author of the commit.
-       * When provided should include:
-       * `avatar_url` to render the avatar icon
-       * `web_url` to link to user profile
-       * `username` to render alt and title tags
-       */
-      author: {
-        type: Object,
-        required: false,
-        default: () => ({}),
-      },
-      showBranch: {
-        type: Boolean,
-        required: false,
-        default: true,
-      },
+    /**
+     * Used to show the commit short sha that links to the commit url.
+     */
+    shortSha: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    /**
+     * If provided shows the commit tile.
+     */
+    title: {
+      type: String,
+      required: false,
+      default: '',
+    },
+    /**
+     * If provided renders information about the author of the commit.
+     * When provided should include:
+     * `avatar_url` to render the avatar icon
+     * `web_url` to link to user profile
+     * `username` to render alt and title tags
+     */
+    author: {
+      type: Object,
+      required: false,
+      default: () => ({}),
+    },
+    showBranch: {
+      type: Boolean,
+      required: false,
+      default: true,
     },
-    computed: {
-      /**
-       * Used to verify if all the properties needed to render the commit
-       * ref section were provided.
-       *
-       * @returns {Boolean}
-       */
-      hasCommitRef() {
-        return this.commitRef && this.commitRef.name && this.commitRef.ref_url;
-      },
-      /**
-       * Used to verify if all the properties needed to render the commit
-       * author section were provided.
-       *
-       * @returns {Boolean}
-       */
-      hasAuthor() {
-        return this.author &&
-          this.author.avatar_url &&
-          this.author.path &&
-          this.author.username;
-      },
-      /**
-       * If information about the author is provided will return a string
-       * to be rendered as the alt attribute of the img tag.
-       *
-       * @returns {String}
-       */
-      userImageAltDescription() {
-        return this.author &&
-          this.author.username ? `${this.author.username}'s avatar` : null;
-      },
+  },
+  computed: {
+    /**
+     * Used to verify if all the properties needed to render the commit
+     * ref section were provided.
+     *
+     * @returns {Boolean}
+     */
+    hasCommitRef() {
+      return this.commitRef && this.commitRef.name && this.commitRef.ref_url;
     },
-    created() {
-      this.commitIconSvg = commitIconSvg;
+    /**
+     * Used to verify if all the properties needed to render the commit
+     * author section were provided.
+     *
+     * @returns {Boolean}
+     */
+    hasAuthor() {
+      return this.author && this.author.avatar_url && this.author.path && this.author.username;
     },
-  };
+    /**
+     * If information about the author is provided will return a string
+     * to be rendered as the alt attribute of the img tag.
+     *
+     * @returns {String}
+     */
+    userImageAltDescription() {
+      return this.author && this.author.username ? `${this.author.username}'s avatar` : null;
+    },
+  },
+};
 </script>
 <template>
   <div class="branch-commit">
@@ -141,11 +133,10 @@
         {{ commitRef.name }}
       </a>
     </template>
-    <div
-      v-html="commitIconSvg"
+    <icon
+      name="commit"
       class="commit-icon js-commit-icon"
-    >
-    </div>
+    />
 
     <a
       class="commit-sha"
@@ -175,7 +166,7 @@
         </a>
       </span>
       <span v-else>
-        Cant find HEAD commit for this branch
+        Can't find HEAD commit for this branch
       </span>
     </div>
   </div>
diff --git a/app/assets/javascripts/vue_shared/components/expand_button.vue b/app/assets/javascripts/vue_shared/components/expand_button.vue
index c943c8d98a4..9295be3e2b2 100644
--- a/app/assets/javascripts/vue_shared/components/expand_button.vue
+++ b/app/assets/javascripts/vue_shared/components/expand_button.vue
@@ -1,33 +1,33 @@
 <script>
-  import { __ } from '~/locale';
-  /**
-   * Port of detail_behavior expand button.
-   *
-   * @example
-   * <expand-button>
-   *   <template slot="expanded">
-   *      Text goes here.
-   *    </template>
-   * </expand-button>
-   */
-  export default {
-    name: 'ExpandButton',
-    data() {
-      return {
-        isCollapsed: true,
-      };
+import { __ } from '~/locale';
+/**
+ * Port of detail_behavior expand button.
+ *
+ * @example
+ * <expand-button>
+ *   <template slot="expanded">
+ *      Text goes here.
+ *    </template>
+ * </expand-button>
+ */
+export default {
+  name: 'ExpandButton',
+  data() {
+    return {
+      isCollapsed: true,
+    };
+  },
+  computed: {
+    ariaLabel() {
+      return __('Click to expand text');
     },
-    computed: {
-      ariaLabel() {
-        return __('Click to expand text');
-      },
+  },
+  methods: {
+    onClick() {
+      this.isCollapsed = !this.isCollapsed;
     },
-    methods: {
-      onClick() {
-        this.isCollapsed = !this.isCollapsed;
-      },
-    },
-  };
+  },
+};
 </script>
 <template>
   <span>
diff --git a/app/assets/javascripts/vue_shared/components/header_ci_component.vue b/app/assets/javascripts/vue_shared/components/header_ci_component.vue
index a0cd0cbd200..088187ed348 100644
--- a/app/assets/javascripts/vue_shared/components/header_ci_component.vue
+++ b/app/assets/javascripts/vue_shared/components/header_ci_component.vue
@@ -1,78 +1,78 @@
 <script>
-  import ciIconBadge from './ci_badge_link.vue';
-  import loadingIcon from './loading_icon.vue';
-  import timeagoTooltip from './time_ago_tooltip.vue';
-  import tooltip from '../directives/tooltip';
-  import userAvatarImage from './user_avatar/user_avatar_image.vue';
+import CiIconBadge from './ci_badge_link.vue';
+import LoadingIcon from './loading_icon.vue';
+import TimeagoTooltip from './time_ago_tooltip.vue';
+import tooltip from '../directives/tooltip';
+import UserAvatarImage from './user_avatar/user_avatar_image.vue';
 
-  /**
-   * Renders header component for job and pipeline page based on UI mockups
-   *
-   * Used in:
-   * - job show page
-   * - pipeline show page
-   */
-  export default {
-    components: {
-      ciIconBadge,
-      loadingIcon,
-      timeagoTooltip,
-      userAvatarImage,
+/**
+ * Renders header component for job and pipeline page based on UI mockups
+ *
+ * Used in:
+ * - job show page
+ * - pipeline show page
+ */
+export default {
+  components: {
+    CiIconBadge,
+    LoadingIcon,
+    TimeagoTooltip,
+    UserAvatarImage,
+  },
+  directives: {
+    tooltip,
+  },
+  props: {
+    status: {
+      type: Object,
+      required: true,
     },
-    directives: {
-      tooltip,
+    itemName: {
+      type: String,
+      required: true,
     },
-    props: {
-      status: {
-        type: Object,
-        required: true,
-      },
-      itemName: {
-        type: String,
-        required: true,
-      },
-      itemId: {
-        type: Number,
-        required: true,
-      },
-      time: {
-        type: String,
-        required: true,
-      },
-      user: {
-        type: Object,
-        required: false,
-        default: () => ({}),
-      },
-      actions: {
-        type: Array,
-        required: false,
-        default: () => [],
-      },
-      hasSidebarButton: {
-        type: Boolean,
-        required: false,
-        default: false,
-      },
-      shouldRenderTriggeredLabel: {
-        type: Boolean,
-        required: false,
-        default: true,
-      },
+    itemId: {
+      type: Number,
+      required: true,
     },
+    time: {
+      type: String,
+      required: true,
+    },
+    user: {
+      type: Object,
+      required: false,
+      default: () => ({}),
+    },
+    actions: {
+      type: Array,
+      required: false,
+      default: () => [],
+    },
+    hasSidebarButton: {
+      type: Boolean,
+      required: false,
+      default: false,
+    },
+    shouldRenderTriggeredLabel: {
+      type: Boolean,
+      required: false,
+      default: true,
+    },
+  },
 
-    computed: {
-      userAvatarAltText() {
-        return `${this.user.name}'s avatar`;
-      },
+  computed: {
+    userAvatarAltText() {
+      return `${this.user.name}'s avatar`;
     },
+  },
 
-    methods: {
-      onClickAction(action) {
-        this.$emit('actionClicked', action);
-      },
+  methods: {
+    onClickAction(action) {
+      this.$emit('actionClicked', action);
     },
-  };
+  },
+};
 </script>
 
 <template>
diff --git a/app/assets/javascripts/vue_shared/components/icon.vue b/app/assets/javascripts/vue_shared/components/icon.vue
index 6a2e05000e1..1a0df49bc29 100644
--- a/app/assets/javascripts/vue_shared/components/icon.vue
+++ b/app/assets/javascripts/vue_shared/components/icon.vue
@@ -1,76 +1,75 @@
 <script>
+/* This is a re-usable vue component for rendering a svg sprite
+  icon
 
-  /* This is a re-usable vue component for rendering a svg sprite
-    icon
+  Sample configuration:
 
-    Sample configuration:
+  <icon
+    name="retry"
+    :size="32"
+    css-classes="top"
+  />
 
-    <icon
-      name="retry"
-      :size="32"
-      css-classes="top"
-    />
+*/
+// only allow classes in images.scss e.g. s12
+const validSizes = [8, 12, 16, 18, 24, 32, 48, 72];
 
-  */
-  // only allow classes in images.scss e.g. s12
-  const validSizes = [8, 12, 16, 18, 24, 32, 48, 72];
-
-  export default {
-    props: {
-      name: {
-        type: String,
-        required: true,
-      },
+export default {
+  props: {
+    name: {
+      type: String,
+      required: true,
+    },
 
-      size: {
-        type: Number,
-        required: false,
-        default: 16,
-        validator(value) {
-          return validSizes.includes(value);
-        },
+    size: {
+      type: Number,
+      required: false,
+      default: 16,
+      validator(value) {
+        return validSizes.includes(value);
       },
+    },
 
-      cssClasses: {
-        type: String,
-        required: false,
-        default: '',
-      },
+    cssClasses: {
+      type: String,
+      required: false,
+      default: '',
+    },
 
-      width: {
-        type: Number,
-        required: false,
-        default: null,
-      },
+    width: {
+      type: Number,
+      required: false,
+      default: null,
+    },
 
-      height: {
-        type: Number,
-        required: false,
-        default: null,
-      },
+    height: {
+      type: Number,
+      required: false,
+      default: null,
+    },
 
-      y: {
-        type: Number,
-        required: false,
-        default: null,
-      },
+    y: {
+      type: Number,
+      required: false,
+      default: null,
+    },
 
-      x: {
-        type: Number,
-        required: false,
-        default: null,
-      },
+    x: {
+      type: Number,
+      required: false,
+      default: null,
     },
+  },
 
-    computed: {
-      spriteHref() {
-        return `${gon.sprite_icons}#${this.name}`;
-      },
-      iconSizeClass() {
-        return this.size ? `s${this.size}` : '';
-      },
+  computed: {
+    spriteHref() {
+      return `${gon.sprite_icons}#${this.name}`;
+    },
+    iconSizeClass() {
+      return this.size ? `s${this.size}` : '';
     },
-  };
+  },
+};
 </script>
 
 <template>
@@ -79,7 +78,8 @@
     :width="width"
     :height="height"
     :x="x"
-    :y="y">
+    :y="y"
+  >
     <use v-bind="{ 'xlink:href':spriteHref }" />
   </svg>
 </template>
diff --git a/app/assets/javascripts/vue_shared/components/sidebar/labels_select/base.vue b/app/assets/javascripts/vue_shared/components/sidebar/labels_select/base.vue
index 5ede53d8d01..70b46a9c2bb 100644
--- a/app/assets/javascripts/vue_shared/components/sidebar/labels_select/base.vue
+++ b/app/assets/javascripts/vue_shared/components/sidebar/labels_select/base.vue
@@ -1,4 +1,5 @@
 <script>
+import $ from 'jquery';
 import { __ } from '~/locale';
 import LabelsSelect from '~/labels_select';
 import LoadingIcon from '../../loading_icon.vue';
@@ -98,11 +99,18 @@ export default {
     this.labelsDropdown = new LabelsSelect(this.$refs.dropdownButton, {
       handleClick: this.handleClick,
     });
+    $(this.$refs.dropdown).on('hidden.gl.dropdown', this.handleDropdownHidden);
   },
   methods: {
     handleClick(label) {
       this.$emit('onLabelClick', label);
     },
+    handleCollapsedValueClick() {
+      this.$emit('toggleCollapse');
+    },
+    handleDropdownHidden() {
+      this.$emit('onDropdownClose');
+    },
   },
 };
 </script>
@@ -112,6 +120,7 @@ export default {
     <dropdown-value-collapsed
       v-if="showCreate"
       :labels="context.labels"
+      @onValueClick="handleCollapsedValueClick"
     />
     <dropdown-title
       :can-edit="canEdit"
@@ -133,7 +142,10 @@ export default {
         :name="hiddenInputName"
         :label="label"
       />
-      <div class="dropdown">
+      <div
+        class="dropdown"
+        ref="dropdown"
+      >
         <dropdown-button
           :ability-name="abilityName"
           :field-name="hiddenInputName"
diff --git a/app/assets/javascripts/vue_shared/components/sidebar/labels_select/dropdown_value_collapsed.vue b/app/assets/javascripts/vue_shared/components/sidebar/labels_select/dropdown_value_collapsed.vue
index 5cf728fe050..68fa2ab8d01 100644
--- a/app/assets/javascripts/vue_shared/components/sidebar/labels_select/dropdown_value_collapsed.vue
+++ b/app/assets/javascripts/vue_shared/components/sidebar/labels_select/dropdown_value_collapsed.vue
@@ -26,6 +26,11 @@ export default {
       return labelsString;
     },
   },
+  methods: {
+    handleClick() {
+      this.$emit('onValueClick');
+    },
+  },
 };
 </script>
 
@@ -36,6 +41,7 @@ export default {
     data-placement="left"
     data-container="body"
     :title="labelsList"
+    @click="handleClick"
   >
     <i
       aria-hidden="true"
diff --git a/app/assets/javascripts/vue_shared/components/sidebar/toggle_sidebar.vue b/app/assets/javascripts/vue_shared/components/sidebar/toggle_sidebar.vue
index 8211d425b1f..de6f8c32e74 100644
--- a/app/assets/javascripts/vue_shared/components/sidebar/toggle_sidebar.vue
+++ b/app/assets/javascripts/vue_shared/components/sidebar/toggle_sidebar.vue
@@ -1,18 +1,29 @@
 <script>
-  export default {
-    name: 'ToggleSidebar',
-    props: {
-      collapsed: {
-        type: Boolean,
-        required: true,
-      },
+import { __ } from '~/locale';
+import tooltip from '~/vue_shared/directives/tooltip';
+
+export default {
+  name: 'ToggleSidebar',
+  directives: {
+    tooltip,
+  },
+  props: {
+    collapsed: {
+      type: Boolean,
+      required: true,
+    },
+  },
+  computed: {
+    tooltipLabel() {
+      return this.collapsed ? __('Expand sidebar') : __('Collapse sidebar');
     },
-    methods: {
-      toggle() {
-        this.$emit('toggle');
-      },
+  },
+  methods: {
+    toggle() {
+      this.$emit('toggle');
     },
-  };
+  },
+};
 </script>
 
 <template>
@@ -20,6 +31,10 @@
     type="button"
     class="btn btn-blank gutter-toggle btn-sidebar-action"
     @click="toggle"
+    v-tooltip
+    data-container="body"
+    data-placement="left"
+    :title="tooltipLabel"
   >
     <i
       aria-label="toggle collapse"
diff --git a/app/assets/stylesheets/framework/buttons.scss b/app/assets/stylesheets/framework/buttons.scss
index 48f20029383..f4f5926e198 100644
--- a/app/assets/stylesheets/framework/buttons.scss
+++ b/app/assets/stylesheets/framework/buttons.scss
@@ -503,3 +503,7 @@ fieldset[disabled] .btn,
     @extend %disabled;
   }
 }
+
+.btn-no-padding {
+  padding: 0;
+}
diff --git a/app/assets/stylesheets/framework/sidebar.scss b/app/assets/stylesheets/framework/sidebar.scss
index 798f248dad4..64fff7463d2 100644
--- a/app/assets/stylesheets/framework/sidebar.scss
+++ b/app/assets/stylesheets/framework/sidebar.scss
@@ -16,7 +16,7 @@
 .nav-header-btn {
   padding: 10px $gl-sidebar-padding;
   color: inherit;
-  transition-duration: .3s;
+  transition-duration: 0.3s;
   position: absolute;
   top: 0;
   cursor: pointer;
@@ -137,6 +137,12 @@
   }
 }
 
+.issuable-sidebar .labels {
+  .value.dont-hide ~ .selectbox {
+    padding-top: $gl-padding-8;
+  }
+}
+
 .pikaday-container {
   .pika-single {
     margin-top: 2px;
@@ -151,4 +157,3 @@
 .sidebar-collapsed-icon .sidebar-collapsed-value {
   font-size: 12px;
 }
-
diff --git a/app/assets/stylesheets/framework/variables.scss b/app/assets/stylesheets/framework/variables.scss
index 37223175199..8c44ebc85ef 100644
--- a/app/assets/stylesheets/framework/variables.scss
+++ b/app/assets/stylesheets/framework/variables.scss
@@ -247,6 +247,7 @@ $btn-sm-side-margin: 7px;
 $btn-xs-side-margin: 5px;
 $issue-status-expired: $orange-500;
 $issuable-sidebar-color: $gl-text-color-secondary;
+$sidebar-block-hover-color: #ebebeb;
 $group-path-color: #999;
 $namespace-kind-color: #aaa;
 $panel-heading-link-color: #777;
@@ -373,6 +374,8 @@ $dropdown-hover-color: $blue-400;
 $link-active-background: rgba(0, 0, 0, 0.04);
 $link-hover-background: rgba(0, 0, 0, 0.06);
 $inactive-badge-background: rgba(0, 0, 0, 0.08);
+$sidebar-toggle-height: 60px;
+$sidebar-milestone-toggle-bottom-margin: 10px;
 
 /*
 * Buttons
diff --git a/app/assets/stylesheets/pages/builds.scss b/app/assets/stylesheets/pages/builds.scss
index 7a6352e45f1..50f32660445 100644
--- a/app/assets/stylesheets/pages/builds.scss
+++ b/app/assets/stylesheets/pages/builds.scss
@@ -1,39 +1,56 @@
 @keyframes fade-out-status {
-  0%, 50% { opacity: 1; }
-  100% { opacity: 0; }
+  0%,
+  50% {
+    opacity: 1;
+  }
+
+  100% {
+    opacity: 0;
+  }
 }
 
 @keyframes blinking-dots {
   0% {
     background-color: rgba($white-light, 1);
     box-shadow: 12px 0 0 0 rgba($white-light, 0.2),
-                24px 0 0 0 rgba($white-light, 0.2);
+      24px 0 0 0 rgba($white-light, 0.2);
   }
 
   25% {
     background-color: rgba($white-light, 0.4);
     box-shadow: 12px 0 0 0 rgba($white-light, 2),
-                24px 0 0 0 rgba($white-light, 0.2);
+      24px 0 0 0 rgba($white-light, 0.2);
   }
 
   75% {
     background-color: rgba($white-light, 0.4);
     box-shadow: 12px 0 0 0 rgba($white-light, 0.2),
-                24px 0 0 0 rgba($white-light, 1);
+      24px 0 0 0 rgba($white-light, 1);
   }
 
   100% {
     background-color: rgba($white-light, 1);
     box-shadow: 12px 0 0 0 rgba($white-light, 0.2),
-                24px 0 0 0 rgba($white-light, 0.2);
+      24px 0 0 0 rgba($white-light, 0.2);
   }
 }
 
 @keyframes blinking-scroll-button {
-  0% { opacity: 0.2; }
-  25% { opacity: 0.5; }
-  50% { opacity: 0.7; }
-  100% { opacity: 1; }
+  0% {
+    opacity: 0.2;
+  }
+
+  25% {
+    opacity: 0.5;
+  }
+
+  50% {
+    opacity: 0.7;
+  }
+
+  100% {
+    opacity: 1;
+  }
 }
 
 .build-page {
@@ -125,12 +142,12 @@
       .btn-scroll.animate {
         .first-triangle {
           animation: blinking-scroll-button 1s ease infinite;
-          animation-delay: .3s;
+          animation-delay: 0.3s;
         }
 
         .second-triangle {
           animation: blinking-scroll-button 1s ease infinite;
-          animation-delay: .2s;
+          animation-delay: 0.2s;
         }
 
         .third-triangle {
diff --git a/app/assets/stylesheets/pages/commits.scss b/app/assets/stylesheets/pages/commits.scss
index 86cdda0359e..e9384d41e00 100644
--- a/app/assets/stylesheets/pages/commits.scss
+++ b/app/assets/stylesheets/pages/commits.scss
@@ -180,10 +180,6 @@
   justify-content: space-between;
   align-items: center;
   flex-grow: 1;
-
-  .merge-request-branches & {
-    flex-direction: column;
-  }
 }
 
 .commit-content {
diff --git a/app/assets/stylesheets/pages/diff.scss b/app/assets/stylesheets/pages/diff.scss
index 7f037582ca0..11052be40a8 100644
--- a/app/assets/stylesheets/pages/diff.scss
+++ b/app/assets/stylesheets/pages/diff.scss
@@ -160,6 +160,11 @@
         }
       }
     }
+
+    .diff-loading-error-block {
+      padding: $gl-padding * 2 $gl-padding;
+      text-align: center;
+    }
   }
 
   .image {
diff --git a/app/assets/stylesheets/pages/issuable.scss b/app/assets/stylesheets/pages/issuable.scss
index 2c0ed976301..b2dad4a358a 100644
--- a/app/assets/stylesheets/pages/issuable.scss
+++ b/app/assets/stylesheets/pages/issuable.scss
@@ -187,7 +187,12 @@
       padding-left: 10px;
 
       &:hover {
-        color: $gray-darkest;
+        color: $gl-text-color;
+      }
+
+      &:hover,
+      &:focus {
+        text-decoration: none;
       }
     }
 
@@ -368,6 +373,14 @@
       padding: 15px 0 0;
       border-bottom: 0;
       overflow: hidden;
+
+      &:hover {
+        background-color: $sidebar-block-hover-color;
+      }
+
+      &.issuable-sidebar-header {
+        padding-top: 0;
+      }
     }
 
     .participants {
@@ -380,8 +393,17 @@
 
     .gutter-toggle {
       width: 100%;
+      height: $sidebar-toggle-height;
       margin-left: 0;
-      padding-left: 25px;
+      padding-left: 0;
+      border-bottom: 1px solid $border-gray-dark;
+    }
+
+    a.gutter-toggle {
+      display: flex;
+      justify-content: center;
+      flex-direction: column;
+      text-align: center;
     }
 
     .sidebar-collapsed-icon {
@@ -428,10 +450,10 @@
 
       .btn-clipboard {
         border: 0;
+        background: transparent;
         color: $issuable-sidebar-color;
 
         &:hover {
-          background: transparent;
           color: $gl-text-color;
         }
       }
diff --git a/app/assets/stylesheets/pages/merge_requests.scss b/app/assets/stylesheets/pages/merge_requests.scss
index 4692d0fb873..66db4917178 100644
--- a/app/assets/stylesheets/pages/merge_requests.scss
+++ b/app/assets/stylesheets/pages/merge_requests.scss
@@ -762,3 +762,20 @@
     max-width: 100%;
   }
 }
+
+// Hack alert: we've rewritten `btn` class in a way that
+// we've broken it and it is not possible to use with `btn-link`
+// which causes a blank button when it's disabled and hovering
+// The css in here is the boostrap one
+.btn-link-retry {
+  &[disabled] {
+    cursor: not-allowed;
+    box-shadow: none;
+    opacity: .65;
+
+    &:hover {
+      color: $file-mode-changed;
+      text-decoration: none;
+    }
+  }
+}
diff --git a/app/assets/stylesheets/pages/milestone.scss b/app/assets/stylesheets/pages/milestone.scss
index 3af8d80daab..bac3b70c734 100644
--- a/app/assets/stylesheets/pages/milestone.scss
+++ b/app/assets/stylesheets/pages/milestone.scss
@@ -53,10 +53,6 @@
 }
 
 .milestone-sidebar {
-  .gutter-toggle {
-    margin-bottom: 10px;
-  }
-
   .milestone-progress {
     .title {
       padding-top: 5px;
@@ -102,7 +98,17 @@
     margin-right: 0;
   }
 
+  .right-sidebar-expanded & {
+    .gutter-toggle {
+      margin-bottom: $sidebar-milestone-toggle-bottom-margin;
+    }
+  }
+
   .right-sidebar-collapsed & {
+    .milestone-progress {
+      padding-top: 0;
+    }
+
     .reference {
       border-top: 1px solid $border-gray-normal;
     }
diff --git a/app/assets/stylesheets/pages/pipelines.scss b/app/assets/stylesheets/pages/pipelines.scss
index 2c840cb407a..3a8ec779c14 100644
--- a/app/assets/stylesheets/pages/pipelines.scss
+++ b/app/assets/stylesheets/pages/pipelines.scss
@@ -14,6 +14,11 @@
 
   .commit-title {
     margin: 0;
+    white-space: normal;
+
+    @media (max-width: $screen-sm-max) {
+      justify-content: flex-end;
+    }
   }
 
   .ci-table {
@@ -463,6 +468,14 @@
     margin-bottom: 10px;
     white-space: normal;
 
+    .ci-job-dropdown-container {
+      // override dropdown.scss
+      .dropdown-menu li button {
+        padding: 0;
+        text-align: center;
+      }
+    }
+
     // ensure .build-content has hover style when action-icon is hovered
     .ci-job-dropdown-container:hover .build-content {
       @extend .build-content:hover;
diff --git a/app/assets/stylesheets/pages/repo.scss b/app/assets/stylesheets/pages/repo.scss
index 5f46e69a56d..450ef7d6b7e 100644
--- a/app/assets/stylesheets/pages/repo.scss
+++ b/app/assets/stylesheets/pages/repo.scss
@@ -68,6 +68,10 @@
 
     .ide-file-changed-icon {
       margin-left: auto;
+
+      > svg {
+        display: block;
+      }
     }
 
     .ide-new-btn {
@@ -378,7 +382,11 @@
   padding: $gl-bar-padding $gl-padding;
   background: $white-light;
   display: flex;
-  justify-content: space-between;
+  justify-content: flex-end;
+
+  > div + div {
+    padding-left: $gl-padding;
+  }
 
   svg {
     vertical-align: middle;
@@ -521,9 +529,13 @@
   overflow: auto;
 }
 
-.multi-file-commit-empty-state-container {
-  align-items: center;
-  justify-content: center;
+.ide-commit-empty-state {
+  padding: 0 $gl-padding;
+}
+
+.ide-commit-empty-state-container {
+  margin-top: auto;
+  margin-bottom: auto;
 }
 
 .multi-file-commit-panel-header {
@@ -532,35 +544,22 @@
   margin-bottom: 0;
   border-bottom: 1px solid $white-dark;
   padding: $gl-btn-padding 0;
-
-  &.is-collapsed {
-    border-bottom: 1px solid $white-dark;
-
-    svg {
-      margin-left: auto;
-      margin-right: auto;
-    }
-
-    .multi-file-commit-panel-collapse-btn {
-      margin-right: auto;
-      margin-left: auto;
-      border-left: 0;
-    }
-  }
 }
 
 .multi-file-commit-panel-header-title {
   display: flex;
   flex: 1;
-  padding: 0 $gl-btn-padding;
+  padding-left: $grid-size;
 
   svg {
     margin-right: $gl-btn-padding;
+    color: $theme-gray-700;
   }
 }
 
 .multi-file-commit-panel-collapse-btn {
   border-left: 1px solid $white-dark;
+  margin-left: auto;
 }
 
 .multi-file-commit-list {
@@ -574,12 +573,14 @@
   display: flex;
   padding: 0;
   align-items: center;
+  border-radius: $border-radius-default;
 
   .multi-file-discard-btn {
     display: none;
+    margin-top: -2px;
     margin-left: auto;
+    margin-right: $grid-size;
     color: $gl-link-color;
-    padding: 0 2px;
 
     &:focus,
     &:hover {
@@ -591,26 +592,31 @@
     background: $white-normal;
 
     .multi-file-discard-btn {
-      display: block;
+      display: flex;
     }
   }
 }
 
-.multi-file-addition {
+.multi-file-additions,
+.multi-file-additions-solid {
   fill: $green-500;
 }
 
-.multi-file-modified {
+.multi-file-modified,
+.multi-file-modified-solid {
   fill: $orange-500;
 }
 
 .multi-file-commit-list-collapsed {
   display: flex;
   flex-direction: column;
+  padding: $gl-padding 0;
 
-  > svg {
+  svg {
+    display: block;
     margin-left: auto;
     margin-right: auto;
+    color: $theme-gray-700;
   }
 
   .file-status-icon {
@@ -622,7 +628,7 @@
 
 .multi-file-commit-list-path {
   padding: $grid-size / 2;
-  padding-left: $gl-padding;
+  padding-left: $grid-size;
   background: none;
   border: 0;
   text-align: left;
@@ -662,11 +668,6 @@
   }
 }
 
-.multi-file-commit-message.form-control {
-  height: 160px;
-  resize: none;
-}
-
 .dirty-diff {
   // !important need to override monaco inline style
   width: 4px !important;
@@ -812,6 +813,41 @@
   }
 }
 
+.ide-commit-list-container {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  padding: 0 16px;
+
+  &:not(.is-collapsed) {
+    flex: 1;
+    min-height: 140px;
+  }
+
+  &.is-collapsed {
+    .multi-file-commit-panel-header {
+      margin-left: -$gl-padding;
+      margin-right: -$gl-padding;
+
+      svg {
+        margin-left: auto;
+        margin-right: auto;
+      }
+
+      .multi-file-commit-panel-collapse-btn {
+        margin-right: auto;
+        margin-left: auto;
+        border-left: 0;
+      }
+    }
+  }
+}
+
+.ide-staged-action-btn {
+  margin-left: auto;
+  color: $gl-link-color;
+}
+
 .ide-commit-radios {
   label {
     font-weight: normal;
@@ -839,3 +875,74 @@
   align-items: center;
   font-weight: $gl-font-weight-bold;
 }
+
+.ide-commit-message-field {
+  height: 200px;
+  background-color: $white-light;
+
+  .md-area {
+    display: flex;
+    flex-direction: column;
+    height: 100%;
+  }
+
+  .nav-links {
+    height: 30px;
+  }
+
+  .help-block {
+    margin-top: 2px;
+    color: $blue-500;
+    cursor: pointer;
+  }
+}
+
+.ide-commit-message-textarea-container {
+  position: relative;
+  width: 100%;
+  height: 100%;
+  overflow: hidden;
+
+  .note-textarea {
+    font-family: $monospace_font;
+  }
+}
+
+.ide-commit-message-highlights-container {
+  position: absolute;
+  left: 0;
+  top: 0;
+  right: -100px;
+  bottom: 0;
+  padding-right: 100px;
+  pointer-events: none;
+  z-index: 1;
+
+  .highlights {
+    white-space: pre-wrap;
+    word-wrap: break-word;
+    color: transparent;
+  }
+
+  mark {
+    margin-left: -1px;
+    padding: 0 2px;
+    border-radius: $border-radius-small;
+    background-color: $orange-200;
+    color: transparent;
+    opacity: 0.6;
+  }
+}
+
+.ide-commit-message-textarea {
+  position: absolute;
+  left: 0;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  width: 100%;
+  height: 100%;
+  z-index: 2;
+  background: transparent;
+  resize: none;
+}
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 24651dd392c..0fdd4d2cb47 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -5,6 +5,7 @@ class ApplicationController < ActionController::Base
   include Gitlab::GonHelper
   include GitlabRoutingHelper
   include PageLayoutHelper
+  include SafeParamsHelper
   include SentryHelper
   include WorkhorseHelper
   include EnforcesTwoFactorAuthentication
diff --git a/app/controllers/concerns/notes_actions.rb b/app/controllers/concerns/notes_actions.rb
index ad4e936a3d4..0c34e49206a 100644
--- a/app/controllers/concerns/notes_actions.rb
+++ b/app/controllers/concerns/notes_actions.rb
@@ -217,7 +217,7 @@ module NotesActions
 
   def note_project
     strong_memoize(:note_project) do
-      return nil unless project
+      next nil unless project
 
       note_project_id = params[:note_project_id]
 
@@ -228,7 +228,7 @@ module NotesActions
           project
         end
 
-      return access_denied! unless can?(current_user, :create_note, the_project)
+      next access_denied! unless can?(current_user, :create_note, the_project)
 
       the_project
     end
diff --git a/app/controllers/dashboard/todos_controller.rb b/app/controllers/dashboard/todos_controller.rb
index e89eaf7edda..f9e8fe624e8 100644
--- a/app/controllers/dashboard/todos_controller.rb
+++ b/app/controllers/dashboard/todos_controller.rb
@@ -86,7 +86,7 @@ class Dashboard::TodosController < Dashboard::ApplicationController
     out_of_range = todos.current_page > total_pages
 
     if out_of_range
-      redirect_to url_for(params.merge(page: total_pages, only_path: true))
+      redirect_to url_for(safe_params.merge(page: total_pages, only_path: true))
     end
 
     out_of_range
diff --git a/app/controllers/groups/variables_controller.rb b/app/controllers/groups/variables_controller.rb
index 6142e75b4c1..4d8a20de017 100644
--- a/app/controllers/groups/variables_controller.rb
+++ b/app/controllers/groups/variables_controller.rb
@@ -15,7 +15,7 @@ module Groups
     def update
       if @group.update(group_variables_params)
         respond_to do |format|
-          format.json { return render_group_variables }
+          format.json { render_group_variables }
         end
       else
         respond_to do |format|
diff --git a/app/controllers/groups_controller.rb b/app/controllers/groups_controller.rb
index 5ac4b8710e2..79fa5818359 100644
--- a/app/controllers/groups_controller.rb
+++ b/app/controllers/groups_controller.rb
@@ -189,6 +189,6 @@ class GroupsController < Groups::ApplicationController
 
     params[:id] = group.to_param
 
-    url_for(params)
+    url_for(safe_params)
   end
 end
diff --git a/app/controllers/projects/issues_controller.rb b/app/controllers/projects/issues_controller.rb
index 767e492f566..d69015c8665 100644
--- a/app/controllers/projects/issues_controller.rb
+++ b/app/controllers/projects/issues_controller.rb
@@ -134,11 +134,11 @@ class Projects::IssuesController < Projects::ApplicationController
   def can_create_branch
     can_create = current_user &&
       can?(current_user, :push_code, @project) &&
-      @issue.can_be_worked_on?(current_user)
+      @issue.can_be_worked_on?
 
     respond_to do |format|
       format.json do
-        render json: { can_create_branch: can_create, has_related_branch: @issue.has_related_branch? }
+        render json: { can_create_branch: can_create, suggested_branch_name: @issue.suggested_branch_name }
       end
     end
   end
@@ -177,7 +177,7 @@ class Projects::IssuesController < Projects::ApplicationController
   end
 
   def authorize_create_merge_request!
-    render_404 unless can?(current_user, :push_code, @project) && @issue.can_be_worked_on?(current_user)
+    render_404 unless can?(current_user, :push_code, @project) && @issue.can_be_worked_on?
   end
 
   def render_issue_json
diff --git a/app/controllers/projects/merge_requests_controller.rb b/app/controllers/projects/merge_requests_controller.rb
index 54e7d81de6a..62b739918e6 100644
--- a/app/controllers/projects/merge_requests_controller.rb
+++ b/app/controllers/projects/merge_requests_controller.rb
@@ -60,13 +60,13 @@ class Projects::MergeRequestsController < Projects::MergeRequests::ApplicationCo
       end
 
       format.patch  do
-        return render_404 unless @merge_request.diff_refs
+        break render_404 unless @merge_request.diff_refs
 
         send_git_patch @project.repository, @merge_request.diff_refs
       end
 
       format.diff do
-        return render_404 unless @merge_request.diff_refs
+        break render_404 unless @merge_request.diff_refs
 
         send_git_diff @project.repository, @merge_request.diff_refs
       end
diff --git a/app/controllers/projects/repositories_controller.rb b/app/controllers/projects/repositories_controller.rb
index 937b0e39cbd..d01f324e6fd 100644
--- a/app/controllers/projects/repositories_controller.rb
+++ b/app/controllers/projects/repositories_controller.rb
@@ -28,11 +28,12 @@ class Projects::RepositoriesController < Projects::ApplicationController
   end
 
   def assign_archive_vars
-    @id = params[:id]
-
-    return unless @id
-
-    @ref, @filename = extract_ref(@id)
+    if params[:id]
+      @ref, @filename = extract_ref(params[:id])
+    else
+      @ref = params[:ref]
+      @filename = nil
+    end
   rescue InvalidPathError
     render_404
   end
diff --git a/app/controllers/projects/variables_controller.rb b/app/controllers/projects/variables_controller.rb
index 517d0b026c2..bf09ea7e4d8 100644
--- a/app/controllers/projects/variables_controller.rb
+++ b/app/controllers/projects/variables_controller.rb
@@ -12,7 +12,7 @@ class Projects::VariablesController < Projects::ApplicationController
   def update
     if @project.update(variables_params)
       respond_to do |format|
-        format.json { return render_variables }
+        format.json { render_variables }
       end
     else
       respond_to do |format|
diff --git a/app/controllers/projects/wikis_controller.rb b/app/controllers/projects/wikis_controller.rb
index c4930d3d18d..1b0751f48c5 100644
--- a/app/controllers/projects/wikis_controller.rb
+++ b/app/controllers/projects/wikis_controller.rb
@@ -29,8 +29,7 @@ class Projects::WikisController < Projects::ApplicationController
     else
       return render('empty') unless can?(current_user, :create_wiki, @project)
 
-      @page = WikiPage.new(@project_wiki)
-      @page.title = params[:id]
+      @page = build_page(title: params[:id])
 
       render 'edit'
     end
@@ -54,7 +53,7 @@ class Projects::WikisController < Projects::ApplicationController
     else
       render 'edit'
     end
-  rescue WikiPage::PageChangedError, WikiPage::PageRenameError => e
+  rescue WikiPage::PageChangedError, WikiPage::PageRenameError, Gitlab::Git::Wiki::OperationError => e
     @error = e
     render 'edit'
   end
@@ -70,6 +69,11 @@ class Projects::WikisController < Projects::ApplicationController
     else
       render action: "edit"
     end
+  rescue Gitlab::Git::Wiki::OperationError => e
+    @page = build_page(wiki_params)
+    @error = e
+
+    render 'edit'
   end
 
   def history
@@ -94,6 +98,9 @@ class Projects::WikisController < Projects::ApplicationController
     redirect_to project_wiki_path(@project, :home),
                 status: 302,
                 notice: "Page was successfully deleted"
+  rescue Gitlab::Git::Wiki::OperationError => e
+    @error = e
+    render 'edit'
   end
 
   def git_access
@@ -116,4 +123,10 @@ class Projects::WikisController < Projects::ApplicationController
   def wiki_params
     params.require(:wiki).permit(:title, :content, :format, :message, :last_commit_sha)
   end
+
+  def build_page(args)
+    WikiPage.new(@project_wiki).tap do |page|
+      page.update_attributes(args)
+    end
+  end
 end
diff --git a/app/controllers/projects_controller.rb b/app/controllers/projects_controller.rb
index 37f14230196..a93b116c6fe 100644
--- a/app/controllers/projects_controller.rb
+++ b/app/controllers/projects_controller.rb
@@ -404,7 +404,7 @@ class ProjectsController < Projects::ApplicationController
     params[:namespace_id] = project.namespace.to_param
     params[:id] = project.to_param
 
-    url_for(params)
+    url_for(safe_params)
   end
 
   def project_export_enabled
diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index 956df4a0a16..31f47a7aa7c 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -146,6 +146,6 @@ class UsersController < ApplicationController
   end
 
   def build_canonical_path(user)
-    url_for(params.merge(username: user.to_param))
+    url_for(safe_params.merge(username: user.to_param))
   end
 end
diff --git a/app/finders/group_descendants_finder.rb b/app/finders/group_descendants_finder.rb
index e72fd8eb3a5..051ea108e06 100644
--- a/app/finders/group_descendants_finder.rb
+++ b/app/finders/group_descendants_finder.rb
@@ -134,10 +134,8 @@ class GroupDescendantsFinder
   end
 
   def direct_child_projects
-    GroupProjectsFinder.new(group: parent_group,
-                            current_user: current_user,
-                            options: { only_owned: true },
-                            params: params).execute
+    GroupProjectsFinder.new(group: parent_group, current_user: current_user, params: params)
+      .execute
   end
 
   # Finds all projects nested under `parent_group` or any of its descendant
diff --git a/app/finders/users_finder.rb b/app/finders/users_finder.rb
index edde8022ec9..65824a51919 100644
--- a/app/finders/users_finder.rb
+++ b/app/finders/users_finder.rb
@@ -32,6 +32,7 @@ class UsersFinder
     users = by_active(users)
     users = by_external_identity(users)
     users = by_external(users)
+    users = by_2fa(users)
     users = by_created_at(users)
     users = by_custom_attributes(users)
 
@@ -76,4 +77,15 @@ class UsersFinder
 
     users.external
   end
+
+  def by_2fa(users)
+    case params[:two_factor]
+    when 'enabled'
+      users.with_two_factor
+    when 'disabled'
+      users.without_two_factor
+    else
+      users
+    end
+  end
 end
diff --git a/app/helpers/blob_helper.rb b/app/helpers/blob_helper.rb
index 866b8773db6..fef29789832 100644
--- a/app/helpers/blob_helper.rb
+++ b/app/helpers/blob_helper.rb
@@ -259,7 +259,7 @@ module BlobHelper
     options = []
 
     if error == :collapsed
-      options << link_to('load it anyway', url_for(params.merge(viewer: viewer.type, expanded: true, format: nil)))
+      options << link_to('load it anyway', url_for(safe_params.merge(viewer: viewer.type, expanded: true, format: nil)))
     end
 
     # If the error is `:server_side_but_stored_externally`, the simple viewer will show the same error,
diff --git a/app/helpers/diff_helper.rb b/app/helpers/diff_helper.rb
index b5ca39711bc..1bb82fd8150 100644
--- a/app/helpers/diff_helper.rb
+++ b/app/helpers/diff_helper.rb
@@ -180,7 +180,7 @@ module DiffHelper
   private
 
   def diff_btn(title, name, selected)
-    params_copy = params.dup
+    params_copy = safe_params.dup
     params_copy[:view] = name
 
     # Always use HTML to handle case where JSON diff rendered this button
diff --git a/app/helpers/issuables_helper.rb b/app/helpers/issuables_helper.rb
index 06c3e569c84..f39a62bccc8 100644
--- a/app/helpers/issuables_helper.rb
+++ b/app/helpers/issuables_helper.rb
@@ -9,6 +9,32 @@ module IssuablesHelper
     "right-sidebar-#{sidebar_gutter_collapsed? ? 'collapsed' : 'expanded'}"
   end
 
+  def sidebar_gutter_tooltip_text
+    sidebar_gutter_collapsed? ? _('Expand sidebar') : _('Collapse sidebar')
+  end
+
+  def sidebar_assignee_tooltip_label(issuable)
+    if issuable.assignee
+      issuable.assignee.name
+    else
+      issuable.allows_multiple_assignees? ? _('Assignee(s)') : _('Assignee')
+    end
+  end
+
+  def sidebar_due_date_tooltip_label(issuable)
+    if issuable.due_date
+      "#{_('Due date')}<br />#{due_date_remaining_days(issuable)}"
+    else
+      _('Due date')
+    end
+  end
+
+  def due_date_remaining_days(issuable)
+    remaining_days_in_words = remaining_days_in_words(issuable)
+
+    "#{issuable.due_date.to_s(:medium)} (#{remaining_days_in_words})"
+  end
+
   def multi_label_name(current_labels, default_label)
     if current_labels && current_labels.any?
       title = current_labels.first.try(:title)
@@ -153,10 +179,14 @@ module IssuablesHelper
   def issuable_labels_tooltip(labels, limit: 5)
     first, last = labels.partition.with_index { |_, i| i < limit  }
 
-    label_names = first.collect(&:name)
-    label_names << "and #{last.size} more" unless last.empty?
+    if labels && labels.any?
+      label_names = first.collect(&:name)
+      label_names << "and #{last.size} more" unless last.empty?
 
-    label_names.join(', ')
+      label_names.join(', ')
+    else
+      _("Labels")
+    end
   end
 
   def issuables_state_counter_text(issuable_type, state, display_count)
@@ -321,7 +351,7 @@ module IssuablesHelper
   def issuable_todo_button_data(issuable, todo, is_collapsed)
     {
       todo_text: "Add todo",
-      mark_text: "Mark done",
+      mark_text: "Mark todo as done",
       todo_icon: (is_collapsed ? icon('plus-square') : nil),
       mark_icon: (is_collapsed ? icon('check-square', class: 'todo-undone') : nil),
       issuable_id: issuable.id,
diff --git a/app/helpers/milestones_helper.rb b/app/helpers/milestones_helper.rb
index be8cb358de2..e8caab3e50c 100644
--- a/app/helpers/milestones_helper.rb
+++ b/app/helpers/milestones_helper.rb
@@ -1,4 +1,6 @@
 module MilestonesHelper
+  include EntityDateHelper
+
   def milestones_filter_path(opts = {})
     if @project
       project_milestones_path(@project, opts)
@@ -72,6 +74,19 @@ module MilestonesHelper
     end
   end
 
+  def milestone_progress_tooltip_text(milestone)
+    has_issues = milestone.total_issues_count(current_user) > 0
+
+    if has_issues
+      [
+        _('Progress'),
+        _("%{percent}%% complete") % { percent: milestone.percent_complete(current_user) }
+      ].join('<br />')
+    else
+      _('Progress')
+    end
+  end
+
   def milestone_progress_bar(milestone)
     options = {
       class: 'progress-bar progress-bar-success',
@@ -95,27 +110,69 @@ module MilestonesHelper
   end
 
   def milestone_tooltip_title(milestone)
-    if milestone.due_date
-      [milestone.due_date.to_s(:medium), "(#{milestone_remaining_days(milestone)})"].join(' ')
+    if milestone
+      "#{milestone.title}<br />#{milestone_tooltip_due_date(milestone)}"
+    else
+      _('Milestone')
     end
   end
 
-  def milestone_remaining_days(milestone)
-    if milestone.expired?
-      content_tag(:strong, 'Past due')
-    elsif milestone.upcoming?
-      content_tag(:strong, 'Upcoming')
-    elsif milestone.due_date
-      time_ago = time_ago_in_words(milestone.due_date)
-      content = time_ago.gsub(/\d+/) { |match| "<strong>#{match}</strong>" }
-      content.slice!("about ")
-      content << " remaining"
-      content.html_safe
-    elsif milestone.start_date && milestone.start_date.past?
-      days    = milestone.elapsed_days
-      content = content_tag(:strong, days)
-      content << " #{'day'.pluralize(days)} elapsed"
+  def milestone_time_for(date, date_type)
+    title = date_type == :start ? "Start date" : "End date"
+
+    if date
+      time_ago = time_ago_in_words(date)
+      time_ago.slice!("about ")
+
+      time_ago << if date.past?
+                    " ago"
+                  else
+                    " remaining"
+                  end
+
+      content = [
+        title,
+        "<br />",
+        date.to_s(:medium),
+        "(#{time_ago})"
+      ].join(" ")
+
       content.html_safe
+    else
+      title
+    end
+  end
+
+  def milestone_issues_tooltip_text(milestone)
+    issues = milestone.count_issues_by_state(current_user)
+
+    return _("Issues") if issues.empty?
+
+    content = []
+
+    content << n_("1 open issue", "%d open issues", issues["opened"]) % issues["opened"] if issues["opened"]
+    content << n_("1 closed issue", "%d closed issues", issues["closed"]) % issues["closed"] if issues["closed"]
+
+    content.join('<br />').html_safe
+  end
+
+  def milestone_merge_requests_tooltip_text(milestone)
+    merge_requests = milestone.merge_requests
+
+    return _("Merge requests") if merge_requests.empty?
+
+    content = []
+
+    content << n_("1 open merge request", "%d open merge requests", merge_requests.opened.count) % merge_requests.opened.count if merge_requests.opened.any?
+    content << n_("1 closed merge request", "%d closed merge requests", merge_requests.closed.count) % merge_requests.closed.count if merge_requests.closed.any?
+    content << n_("1 merged merge request", "%d merged merge requests", merge_requests.merged.count) % merge_requests.merged.count if merge_requests.merged.any?
+
+    content.join('<br />').html_safe
+  end
+
+  def milestone_tooltip_due_date(milestone)
+    if milestone.due_date
+      "#{milestone.due_date.to_s(:medium)} (#{remaining_days_in_words(milestone)})"
     end
   end
 
diff --git a/app/helpers/nav_helper.rb b/app/helpers/nav_helper.rb
index 56c88e6eab0..7754c34d6f0 100644
--- a/app/helpers/nav_helper.rb
+++ b/app/helpers/nav_helper.rb
@@ -28,7 +28,7 @@ module NavHelper
       end
     elsif current_path?('jobs#show')
       %w[page-gutter build-sidebar right-sidebar-expanded]
-    elsif current_controller?('wikis') && current_action?('show', 'create', 'edit', 'update', 'history', 'git_access')
+    elsif current_controller?('wikis') && current_action?('show', 'create', 'edit', 'update', 'history', 'git_access', 'destroy')
       %w[page-gutter wiki-sidebar right-sidebar-expanded]
     else
       []
diff --git a/app/helpers/safe_params_helper.rb b/app/helpers/safe_params_helper.rb
new file mode 100644
index 00000000000..b568e8810cc
--- /dev/null
+++ b/app/helpers/safe_params_helper.rb
@@ -0,0 +1,11 @@
+module SafeParamsHelper
+  # Rails 5.0 requires to permit `params` if they're used in url helpers.
+  # Use this helper when generating links with `params.merge(...)`
+  def safe_params
+    if params.respond_to?(:permit!)
+      params.except(:host, :port, :protocol).permit!
+    else
+      params
+    end
+  end
+end
diff --git a/app/helpers/tree_helper.rb b/app/helpers/tree_helper.rb
index 5e7c20ef51e..dc42caa70e5 100644
--- a/app/helpers/tree_helper.rb
+++ b/app/helpers/tree_helper.rb
@@ -90,7 +90,7 @@ module TreeHelper
   end
 
   def commit_in_single_accessible_branch
-    branch_name = html_escape(selected_branch)
+    branch_name = ERB::Util.html_escape(selected_branch)
 
     message = _("Your changes can be committed to %{branch_name} because a merge "\
                 "request is open.") % { branch_name: "<strong>#{branch_name}</strong>" }
diff --git a/app/mailers/emails/issues.rb b/app/mailers/emails/issues.rb
index b33131becd3..392cc0bee03 100644
--- a/app/mailers/emails/issues.rb
+++ b/app/mailers/emails/issues.rb
@@ -6,6 +6,12 @@ module Emails
       mail_new_thread(@issue, issue_thread_options(@issue.author_id, recipient_id, reason))
     end
 
+    def issue_due_email(recipient_id, issue_id, reason = nil)
+      setup_issue_mail(issue_id, recipient_id)
+
+      mail_new_thread(@issue, issue_thread_options(@issue.author_id, recipient_id, reason))
+    end
+
     def new_mention_in_issue_email(recipient_id, issue_id, updated_by_user_id, reason = nil)
       setup_issue_mail(issue_id, recipient_id)
       mail_answer_thread(@issue, issue_thread_options(updated_by_user_id, recipient_id, reason))
diff --git a/app/models/ci/build.rb b/app/models/ci/build.rb
index 4aa65bf4273..b0c02cdeec7 100644
--- a/app/models/ci/build.rb
+++ b/app/models/ci/build.rb
@@ -20,7 +20,7 @@ module Ci
     has_one :last_deployment, -> { order('deployments.id DESC') }, as: :deployable, class_name: 'Deployment'
     has_many :trace_sections, class_name: 'Ci::BuildTraceSection'
 
-    has_many :job_artifacts, class_name: 'Ci::JobArtifact', foreign_key: :job_id, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
+    has_many :job_artifacts, class_name: 'Ci::JobArtifact', foreign_key: :job_id, dependent: :destroy, inverse_of: :job # rubocop:disable Cop/ActiveRecordDependent
     has_one :job_artifacts_archive, -> { where(file_type: Ci::JobArtifact.file_types[:archive]) }, class_name: 'Ci::JobArtifact', inverse_of: :job, foreign_key: :job_id
     has_one :job_artifacts_metadata, -> { where(file_type: Ci::JobArtifact.file_types[:metadata]) }, class_name: 'Ci::JobArtifact', inverse_of: :job, foreign_key: :job_id
     has_one :job_artifacts_trace, -> { where(file_type: Ci::JobArtifact.file_types[:trace]) }, class_name: 'Ci::JobArtifact', inverse_of: :job, foreign_key: :job_id
@@ -95,8 +95,8 @@ module Ci
       run_after_commit { BuildHooksWorker.perform_async(build.id) }
     end
 
-    after_commit :update_project_statistics_after_save, on: [:create, :update]
-    after_commit :update_project_statistics, on: :destroy
+    after_save :update_project_statistics_after_save, if: :artifacts_size_changed?
+    after_destroy :update_project_statistics_after_destroy, unless: :project_destroyed?
 
     class << self
       # This is needed for url_for to work,
@@ -162,7 +162,7 @@ module Ci
         build.validates_dependencies! unless Feature.enabled?('ci_disable_validates_dependencies')
       end
 
-      before_transition pending: :running do |build|
+      after_transition pending: :running do |build|
         build.ensure_metadata.update_timeout_state
       end
     end
@@ -479,7 +479,7 @@ module Ci
 
     def user_variables
       Gitlab::Ci::Variables::Collection.new.tap do |variables|
-        return variables if user.blank?
+        break variables if user.blank?
 
         variables.append(key: 'GITLAB_USER_ID', value: user.id.to_s)
         variables.append(key: 'GITLAB_USER_EMAIL', value: user.email)
@@ -594,7 +594,7 @@ module Ci
 
     def persisted_variables
       Gitlab::Ci::Variables::Collection.new.tap do |variables|
-        return variables unless persisted?
+        break variables unless persisted?
 
         variables
           .append(key: 'CI_JOB_ID', value: id.to_s)
@@ -611,7 +611,7 @@ module Ci
       Gitlab::Ci::Variables::Collection.new.tap do |variables|
         variables.append(key: 'CI', value: 'true')
         variables.append(key: 'GITLAB_CI', value: 'true')
-        variables.append(key: 'GITLAB_FEATURES', value: project.namespace.features.join(','))
+        variables.append(key: 'GITLAB_FEATURES', value: project.licensed_features.join(','))
         variables.append(key: 'CI_SERVER_NAME', value: 'GitLab')
         variables.append(key: 'CI_SERVER_VERSION', value: Gitlab::VERSION)
         variables.append(key: 'CI_SERVER_REVISION', value: Gitlab::REVISION)
@@ -643,7 +643,7 @@ module Ci
 
     def persisted_environment_variables
       Gitlab::Ci::Variables::Collection.new.tap do |variables|
-        return variables unless persisted? && persisted_environment.present?
+        break variables unless persisted? && persisted_environment.present?
 
         variables.concat(persisted_environment.predefined_variables)
 
@@ -664,16 +664,20 @@ module Ci
       pipeline.config_processor.build_attributes(name)
     end
 
-    def update_project_statistics
-      return unless project
+    def update_project_statistics_after_save
+      update_project_statistics(read_attribute(:artifacts_size).to_i - artifacts_size_was.to_i)
+    end
 
-      ProjectCacheWorker.perform_async(project_id, [], [:build_artifacts_size])
+    def update_project_statistics_after_destroy
+      update_project_statistics(-artifacts_size)
     end
 
-    def update_project_statistics_after_save
-      if previous_changes.include?('artifacts_size')
-        update_project_statistics
-      end
+    def update_project_statistics(difference)
+      ProjectStatistics.increment_statistic(project_id, :build_artifacts_size, difference)
+    end
+
+    def project_destroyed?
+      project.pending_delete?
     end
   end
 end
diff --git a/app/models/ci/group_variable.rb b/app/models/ci/group_variable.rb
index 62d768cc6cf..44cb583e1bd 100644
--- a/app/models/ci/group_variable.rb
+++ b/app/models/ci/group_variable.rb
@@ -4,7 +4,7 @@ module Ci
     include HasVariable
     include Presentable
 
-    belongs_to :group
+    belongs_to :group, class_name: "::Group"
 
     alias_attribute :secret_value, :value
 
diff --git a/app/models/ci/job_artifact.rb b/app/models/ci/job_artifact.rb
index fbb95fe16df..39676efa08c 100644
--- a/app/models/ci/job_artifact.rb
+++ b/app/models/ci/job_artifact.rb
@@ -7,12 +7,15 @@ module Ci
     belongs_to :project
     belongs_to :job, class_name: "Ci::Build", foreign_key: :job_id
 
-    before_save :update_file_store
+    mount_uploader :file, JobArtifactUploader
+
     before_save :set_size, if: :file_changed?
+    after_save :update_project_statistics_after_save, if: :size_changed?
+    after_destroy :update_project_statistics_after_destroy, unless: :project_destroyed?
 
-    scope :with_files_stored_locally, -> { where(file_store: [nil, ::JobArtifactUploader::Store::LOCAL]) }
+    after_save :update_file_store
 
-    mount_uploader :file, JobArtifactUploader
+    scope :with_files_stored_locally, -> { where(file_store: [nil, ::JobArtifactUploader::Store::LOCAL]) }
 
     delegate :exists?, :open, to: :file
 
@@ -23,7 +26,9 @@ module Ci
     }
 
     def update_file_store
-      self.file_store = file.object_store
+      # The file.object_store is set during `uploader.store!`
+      # which happens after object is inserted/updated
+      self.update_column(:file_store, file.object_store)
     end
 
     def self.artifacts_size_for(project)
@@ -34,10 +39,6 @@ module Ci
       [nil, ::JobArtifactUploader::Store::LOCAL].include?(self.file_store)
     end
 
-    def set_size
-      self.size = file.size
-    end
-
     def expire_in
       expire_at - Time.now if expire_at
     end
@@ -48,5 +49,28 @@ module Ci
           ChronicDuration.parse(value)&.seconds&.from_now
         end
     end
+
+    private
+
+    def set_size
+      self.size = file.size
+    end
+
+    def update_project_statistics_after_save
+      update_project_statistics(size.to_i - size_was.to_i)
+    end
+
+    def update_project_statistics_after_destroy
+      update_project_statistics(-self.size)
+    end
+
+    def update_project_statistics(difference)
+      ProjectStatistics.increment_statistic(project_id, :build_artifacts_size, difference)
+    end
+
+    def project_destroyed?
+      # Use job.project to avoid extra DB query for project
+      job.project.pending_delete?
+    end
   end
 end
diff --git a/app/models/ci/runner.rb b/app/models/ci/runner.rb
index ee0d8df8eb7..5a4c56ec0dc 100644
--- a/app/models/ci/runner.rb
+++ b/app/models/ci/runner.rb
@@ -13,7 +13,7 @@ module Ci
 
     has_many :builds
     has_many :runner_projects, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-    has_many :projects, -> { auto_include(false) }, through: :runner_projects
+    has_many :projects, through: :runner_projects
 
     has_one :last_build, ->() { order('id DESC') }, class_name: 'Ci::Build'
 
diff --git a/app/models/clusters/cluster.rb b/app/models/clusters/cluster.rb
index e4a06f3f976..77947d515c1 100644
--- a/app/models/clusters/cluster.rb
+++ b/app/models/clusters/cluster.rb
@@ -15,7 +15,7 @@ module Clusters
     belongs_to :user
 
     has_many :cluster_projects, class_name: 'Clusters::Project'
-    has_many :projects, -> { auto_include(false) }, through: :cluster_projects, class_name: '::Project'
+    has_many :projects, through: :cluster_projects, class_name: '::Project'
 
     # we force autosave to happen when we save `Cluster` model
     has_one :provider_gcp, class_name: 'Clusters::Providers::Gcp', autosave: true
diff --git a/app/models/commit.rb b/app/models/commit.rb
index de860df4b9c..9750e9298ec 100644
--- a/app/models/commit.rb
+++ b/app/models/commit.rb
@@ -248,7 +248,7 @@ class Commit
   end
 
   def notes_with_associations
-    notes.includes(:author)
+    notes.includes(:author, :award_emoji)
   end
 
   def merge_requests
diff --git a/app/models/commit_status.rb b/app/models/commit_status.rb
index 3469d5d795c..b6276c2fb50 100644
--- a/app/models/commit_status.rb
+++ b/app/models/commit_status.rb
@@ -87,7 +87,7 @@ class CommitStatus < ActiveRecord::Base
       transition [:created, :pending, :running, :manual] => :canceled
     end
 
-    before_transition created: [:pending, :running] do |commit_status|
+    before_transition [:created, :skipped, :manual] => :pending do |commit_status|
       commit_status.queued_at = Time.now
     end
 
diff --git a/app/models/concerns/atomic_internal_id.rb b/app/models/concerns/atomic_internal_id.rb
index 4b66725a3e6..22f516a172f 100644
--- a/app/models/concerns/atomic_internal_id.rb
+++ b/app/models/concerns/atomic_internal_id.rb
@@ -27,8 +27,9 @@ module AtomicInternalId
   module ClassMethods
     def has_internal_id(column, scope:, init:) # rubocop:disable Naming/PredicateName
       before_validation(on: :create) do
-        if read_attribute(column).blank?
-          scope_attrs = { scope => association(scope).reader }
+        scope_value = association(scope).reader
+        if read_attribute(column).blank? && scope_value
+          scope_attrs = { scope_value.class.table_name.singularize.to_sym => scope_value }
           usage = self.class.table_name.to_sym
 
           new_iid = InternalId.generate_next(self, scope_attrs, usage, init)
diff --git a/app/models/concerns/cache_markdown_field.rb b/app/models/concerns/cache_markdown_field.rb
index 4ae5dd8c677..db8cf322ef7 100644
--- a/app/models/concerns/cache_markdown_field.rb
+++ b/app/models/concerns/cache_markdown_field.rb
@@ -11,7 +11,9 @@ module CacheMarkdownField
   extend ActiveSupport::Concern
 
   # Increment this number every time the renderer changes its output
-  CACHE_VERSION = 3
+  CACHE_REDCARPET_VERSION         = 3
+  CACHE_COMMONMARK_VERSION_START  = 10
+  CACHE_COMMONMARK_VERSION        = 11
 
   # changes to these attributes cause the cache to be invalidates
   INVALIDATED_BY = %w[author project].freeze
@@ -49,12 +51,14 @@ module CacheMarkdownField
 
     # Always include a project key, or Banzai complains
     project = self.project if self.respond_to?(:project)
-    group = self.group if self.respond_to?(:group)
+    group   = self.group if self.respond_to?(:group)
     context = cached_markdown_fields[field].merge(project: project, group: group)
 
     # Banzai is less strict about authors, so don't always have an author key
     context[:author] = self.author if self.respond_to?(:author)
 
+    context[:markdown_engine] = markdown_engine
+
     context
   end
 
@@ -69,7 +73,7 @@ module CacheMarkdownField
         Banzai::Renderer.cacheless_render_field(self, markdown_field, options)
       ]
     end.to_h
-    updates['cached_markdown_version'] = CacheMarkdownField::CACHE_VERSION
+    updates['cached_markdown_version'] = latest_cached_markdown_version
 
     updates.each {|html_field, data| write_attribute(html_field, data) }
   end
@@ -90,7 +94,7 @@ module CacheMarkdownField
     markdown_changed = attribute_changed?(markdown_field) || false
     html_changed = attribute_changed?(html_field) || false
 
-    CacheMarkdownField::CACHE_VERSION == cached_markdown_version &&
+    latest_cached_markdown_version == cached_markdown_version &&
       (html_changed || markdown_changed == html_changed)
   end
 
@@ -109,6 +113,24 @@ module CacheMarkdownField
     __send__(cached_markdown_fields.html_field(markdown_field)) # rubocop:disable GitlabSecurity/PublicSend
   end
 
+  def latest_cached_markdown_version
+    return CacheMarkdownField::CACHE_REDCARPET_VERSION unless cached_markdown_version
+
+    if cached_markdown_version < CacheMarkdownField::CACHE_COMMONMARK_VERSION_START
+      CacheMarkdownField::CACHE_REDCARPET_VERSION
+    else
+      CacheMarkdownField::CACHE_COMMONMARK_VERSION
+    end
+  end
+
+  def markdown_engine
+    if latest_cached_markdown_version < CacheMarkdownField::CACHE_COMMONMARK_VERSION_START
+      :redcarpet
+    else
+      :common_mark
+    end
+  end
+
   included do
     cattr_reader :cached_markdown_fields do
       FieldData.new
diff --git a/app/models/concerns/group_descendant.rb b/app/models/concerns/group_descendant.rb
index 01957da0bf3..261ace57a17 100644
--- a/app/models/concerns/group_descendant.rb
+++ b/app/models/concerns/group_descendant.rb
@@ -37,7 +37,20 @@ module GroupDescendant
     parent ||= preloaded.detect { |possible_parent| possible_parent.is_a?(Group) && possible_parent.id == child.parent_id }
 
     if parent.nil? && !child.parent_id.nil?
-      raise ArgumentError.new('parent was not preloaded')
+      parent = child.parent
+
+      exception = ArgumentError.new <<~MSG
+        parent: [GroupDescendant: #{parent.inspect}] was not preloaded for [#{child.inspect}]")
+        This error is not user facing, but causes a +1 query.
+      MSG
+      extras = {
+        parent: parent,
+        child: child,
+        preloaded: preloaded.map(&:full_path)
+      }
+      issue_url = 'https://gitlab.com/gitlab-org/gitlab-ce/issues/40785'
+
+      Gitlab::Sentry.track_exception(exception, issue_url: issue_url, extra: extras)
     end
 
     if parent.nil? && hierarchy_top.present?
diff --git a/app/models/concerns/issuable.rb b/app/models/concerns/issuable.rb
index d9416352f9c..b45395343cc 100644
--- a/app/models/concerns/issuable.rb
+++ b/app/models/concerns/issuable.rb
@@ -48,7 +48,7 @@ module Issuable
     end
 
     has_many :label_links, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-    has_many :labels, -> { auto_include(false) }, through: :label_links
+    has_many :labels, through: :label_links
     has_many :todos, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
     has_one :metrics
diff --git a/app/models/concerns/milestoneish.rb b/app/models/concerns/milestoneish.rb
index 5130ecec472..967fd9c5eea 100644
--- a/app/models/concerns/milestoneish.rb
+++ b/app/models/concerns/milestoneish.rb
@@ -102,14 +102,14 @@ module Milestoneish
     Gitlab::TimeTrackingFormatter.output(total_issue_time_estimate)
   end
 
-  private
-
   def count_issues_by_state(user)
     memoize_per_user(user, :count_issues_by_state) do
       issues_visible_to_user(user).reorder(nil).group(:state).count
     end
   end
 
+  private
+
   def memoize_per_user(user, method_name)
     memoized_users[method_name][user&.id] ||= yield
   end
diff --git a/app/models/concerns/nonatomic_internal_id.rb b/app/models/concerns/nonatomic_internal_id.rb
deleted file mode 100644
index 9d0c9b8512f..00000000000
--- a/app/models/concerns/nonatomic_internal_id.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-module NonatomicInternalId
-  extend ActiveSupport::Concern
-
-  included do
-    validate :set_iid, on: :create
-    validates :iid, presence: true, numericality: true
-  end
-
-  def set_iid
-    if iid.blank?
-      parent = project || group
-      records = parent.public_send(self.class.name.tableize) # rubocop:disable GitlabSecurity/PublicSend
-      max_iid = records.maximum(:iid)
-
-      self.iid = max_iid.to_i + 1
-    end
-  end
-
-  def to_param
-    iid.to_s
-  end
-end
diff --git a/app/models/concerns/resolvable_discussion.rb b/app/models/concerns/resolvable_discussion.rb
index 399abb67c9d..7c236369793 100644
--- a/app/models/concerns/resolvable_discussion.rb
+++ b/app/models/concerns/resolvable_discussion.rb
@@ -102,7 +102,7 @@ module ResolvableDiscussion
     yield(notes_relation)
 
     # Set the notes array to the updated notes
-    @notes = notes_relation.fresh.auto_include(false).to_a # rubocop:disable Gitlab/ModuleWithInstanceVariables
+    @notes = notes_relation.fresh.to_a # rubocop:disable Gitlab/ModuleWithInstanceVariables
 
     self.class.memoized_values.each do |name|
       clear_memoization(name)
diff --git a/app/models/concerns/routable.rb b/app/models/concerns/routable.rb
index dfd7d94450b..915ad6959be 100644
--- a/app/models/concerns/routable.rb
+++ b/app/models/concerns/routable.rb
@@ -102,7 +102,7 @@ module Routable
   # the route. Caching this per request ensures that even if we have multiple instances,
   # we will not have to duplicate work, avoiding N+1 queries in some cases.
   def full_path
-    return uncached_full_path unless RequestStore.active?
+    return uncached_full_path unless RequestStore.active? && persisted?
 
     RequestStore[full_path_key] ||= uncached_full_path
   end
@@ -124,6 +124,11 @@ module Routable
     end
   end
 
+  # Group would override this to check from association
+  def owned_by?(user)
+    owner == user
+  end
+
   private
 
   def set_path_errors
diff --git a/app/models/concerns/uniquify.rb b/app/models/concerns/uniquify.rb
index a7fe5951b6e..549a76da20e 100644
--- a/app/models/concerns/uniquify.rb
+++ b/app/models/concerns/uniquify.rb
@@ -1,13 +1,21 @@
+# Uniquify
+#
+# Return a version of the given 'base' string that is unique
+# by appending a counter to it. Uniqueness is determined by
+# repeated calls to the passed block.
+#
+# You can pass an initial value for the counter, if not given
+# counting starts from 1.
+#
+# If `base` is a function/proc, we expect that calling it with a
+# candidate counter returns a string to test/return.
 class Uniquify
-  # Return a version of the given 'base' string that is unique
-  # by appending a counter to it. Uniqueness is determined by
-  # repeated calls to the passed block.
-  #
-  # If `base` is a function/proc, we expect that calling it with a
-  # candidate counter returns a string to test/return.
+  def initialize(counter = nil)
+    @counter = counter
+  end
+
   def string(base)
     @base = base
-    @counter = nil
 
     increment_counter! while yield(base_string)
     base_string
diff --git a/app/models/deploy_key.rb b/app/models/deploy_key.rb
index 858b7ef533e..89a74b7dcb1 100644
--- a/app/models/deploy_key.rb
+++ b/app/models/deploy_key.rb
@@ -2,7 +2,7 @@ class DeployKey < Key
   include IgnorableColumn
 
   has_many :deploy_keys_projects, inverse_of: :deploy_key, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-  has_many :projects, -> { auto_include(false) }, through: :deploy_keys_projects
+  has_many :projects, through: :deploy_keys_projects
 
   scope :in_projects, ->(projects) { joins(:deploy_keys_projects).where('deploy_keys_projects.project_id in (?)', projects) }
   scope :are_public,  -> { where(public: true) }
diff --git a/app/models/deploy_token.rb b/app/models/deploy_token.rb
index 8dae821a10e..979e9232fda 100644
--- a/app/models/deploy_token.rb
+++ b/app/models/deploy_token.rb
@@ -8,7 +8,7 @@ class DeployToken < ActiveRecord::Base
   default_value_for(:expires_at) { Forever.date }
 
   has_many :project_deploy_tokens, inverse_of: :deploy_token
-  has_many :projects, -> { auto_include(false) }, through: :project_deploy_tokens
+  has_many :projects, through: :project_deploy_tokens
 
   validate :ensure_at_least_one_scope
   before_save :ensure_token
diff --git a/app/models/deployment.rb b/app/models/deployment.rb
index e18ea8bfea4..254764eefde 100644
--- a/app/models/deployment.rb
+++ b/app/models/deployment.rb
@@ -1,11 +1,13 @@
 class Deployment < ActiveRecord::Base
-  include NonatomicInternalId
+  include AtomicInternalId
 
   belongs_to :project, required: true
   belongs_to :environment, required: true
   belongs_to :user
   belongs_to :deployable, polymorphic: true # rubocop:disable Cop/PolymorphicAssociations
 
+  has_internal_id :iid, scope: :project, init: ->(s) { s&.project&.deployments&.maximum(:iid) }
+
   validates :sha, presence: true
   validates :ref, presence: true
 
diff --git a/app/models/fork_network.rb b/app/models/fork_network.rb
index aad3509b895..7f1728e8c77 100644
--- a/app/models/fork_network.rb
+++ b/app/models/fork_network.rb
@@ -1,7 +1,7 @@
 class ForkNetwork < ActiveRecord::Base
   belongs_to :root_project, class_name: 'Project'
   has_many :fork_network_members
-  has_many :projects, -> { auto_include(false) }, through: :fork_network_members
+  has_many :projects, through: :fork_network_members
 
   after_create :add_root_as_member, if: :root_project
 
diff --git a/app/models/group.rb b/app/models/group.rb
index 202988d743d..9b42bbf99be 100644
--- a/app/models/group.rb
+++ b/app/models/group.rb
@@ -12,9 +12,9 @@ class Group < Namespace
 
   has_many :group_members, -> { where(requested_at: nil) }, dependent: :destroy, as: :source # rubocop:disable Cop/ActiveRecordDependent
   alias_method :members, :group_members
-  has_many :users, -> { auto_include(false) }, through: :group_members
+  has_many :users, through: :group_members
   has_many :owners,
-    -> { where(members: { access_level: Gitlab::Access::OWNER }).auto_include(false) },
+    -> { where(members: { access_level: Gitlab::Access::OWNER }) },
     through: :group_members,
     source: :user
 
@@ -23,7 +23,7 @@ class Group < Namespace
 
   has_many :milestones
   has_many :project_group_links, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-  has_many :shared_projects, -> { auto_include(false) }, through: :project_group_links, source: :project
+  has_many :shared_projects, through: :project_group_links, source: :project
   has_many :notification_settings, dependent: :destroy, as: :source # rubocop:disable Cop/ActiveRecordDependent
   has_many :labels, class_name: 'GroupLabel'
   has_many :variables, class_name: 'Ci::GroupVariable'
@@ -125,6 +125,10 @@ class Group < Namespace
     self[:lfs_enabled]
   end
 
+  def owned_by?(user)
+    owners.include?(user)
+  end
+
   def add_users(users, access_level, current_user: nil, expires_at: nil)
     GroupMember.add_users(
       self,
diff --git a/app/models/internal_id.rb b/app/models/internal_id.rb
index cbec735c2dd..189942c5ad8 100644
--- a/app/models/internal_id.rb
+++ b/app/models/internal_id.rb
@@ -12,8 +12,9 @@
 # * (Optionally) add columns to `internal_ids` if needed for scope.
 class InternalId < ActiveRecord::Base
   belongs_to :project
+  belongs_to :namespace
 
-  enum usage: { issues: 0 }
+  enum usage: { issues: 0, merge_requests: 1, deployments: 2, milestones: 3, epics: 4 }
 
   validates :usage, presence: true
 
@@ -23,9 +24,12 @@ class InternalId < ActiveRecord::Base
   #
   # The operation locks the record and gathers a `ROW SHARE` lock (in PostgreSQL).
   # As such, the increment is atomic and safe to be called concurrently.
-  def increment_and_save!
+  #
+  # If a `maximum_iid` is passed in, this overrides the incremented value if it's
+  # greater than that. This can be used to correct the increment value if necessary.
+  def increment_and_save!(maximum_iid)
     lock!
-    self.last_value = (last_value || 0) + 1
+    self.last_value = [(last_value || 0) + 1, (maximum_iid || 0) + 1].max
     save!
     last_value
   end
@@ -89,7 +93,16 @@ class InternalId < ActiveRecord::Base
         # and increment its last value
         #
         # Note this will acquire a ROW SHARE lock on the InternalId record
-        (lookup || create_record).increment_and_save!
+
+        # Note we always calculate the maximum iid present here and
+        # pass it in to correct the InternalId entry if it's last_value is off.
+        #
+        # This can happen in a transition phase where both `AtomicInternalId` and
+        # `NonatomicInternalId` code runs (e.g. during a deploy).
+        #
+        # This is subject to be cleaned up with the 10.8 release:
+        # https://gitlab.com/gitlab-org/gitlab-ce/issues/45389.
+        (lookup || create_record).increment_and_save!(maximum_iid)
       end
     end
 
@@ -115,11 +128,15 @@ class InternalId < ActiveRecord::Base
         InternalId.create!(
           **scope,
           usage: usage_value,
-          last_value: init.call(subject) || 0
+          last_value: maximum_iid
         )
       end
     rescue ActiveRecord::RecordNotUnique
       lookup
     end
+
+    def maximum_iid
+      @maximum_iid ||= init.call(subject) || 0
+    end
   end
 end
diff --git a/app/models/issue.rb b/app/models/issue.rb
index c1ffe6512ea..0332bfa9371 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -34,7 +34,7 @@ class Issue < ActiveRecord::Base
     dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
 
   has_many :issue_assignees
-  has_many :assignees, -> { auto_include(false) }, class_name: "User", through: :issue_assignees
+  has_many :assignees, class_name: "User", through: :issue_assignees
 
   validates :project, presence: true
 
@@ -49,6 +49,7 @@ class Issue < ActiveRecord::Base
   scope :without_due_date, -> { where(due_date: nil) }
   scope :due_before, ->(date) { where('issues.due_date < ?', date) }
   scope :due_between, ->(from_date, to_date) { where('issues.due_date >= ?', from_date).where('issues.due_date <= ?', to_date) }
+  scope :due_tomorrow, -> { where(due_date: Date.tomorrow) }
 
   scope :order_due_date_asc, -> { reorder('issues.due_date IS NULL, issues.due_date ASC') }
   scope :order_due_date_desc, -> { reorder('issues.due_date IS NULL, issues.due_date DESC') }
@@ -193,6 +194,15 @@ class Issue < ActiveRecord::Base
     branches_with_iid - branches_with_merge_request
   end
 
+  def suggested_branch_name
+    return to_branch_name unless project.repository.branch_exists?(to_branch_name)
+
+    start_counting_from = 2
+    Uniquify.new(start_counting_from).string(-> (counter) { "#{to_branch_name}-#{counter}" }) do |suggested_branch_name|
+      project.repository.branch_exists?(suggested_branch_name)
+    end
+  end
+
   # Returns boolean if a related branch exists for the current issue
   # ignores merge requests branchs
   def has_related_branch?
@@ -247,11 +257,8 @@ class Issue < ActiveRecord::Base
     end
   end
 
-  def can_be_worked_on?(current_user)
-    !self.closed? &&
-      !self.project.forked? &&
-      self.related_branches(current_user).empty? &&
-      self.closed_by_merge_requests(current_user).empty?
+  def can_be_worked_on?
+    !self.closed? && !self.project.forked?
   end
 
   # Returns `true` if the current issue can be viewed by either a logged in User
diff --git a/app/models/label.rb b/app/models/label.rb
index f3496884cff..de7f1d56c64 100644
--- a/app/models/label.rb
+++ b/app/models/label.rb
@@ -18,8 +18,8 @@ class Label < ActiveRecord::Base
   has_many :lists, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
   has_many :priorities, class_name: 'LabelPriority'
   has_many :label_links, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-  has_many :issues, -> { auto_include(false) }, through: :label_links, source: :target, source_type: 'Issue'
-  has_many :merge_requests, -> { auto_include(false) }, through: :label_links, source: :target, source_type: 'MergeRequest'
+  has_many :issues, through: :label_links, source: :target, source_type: 'Issue'
+  has_many :merge_requests, through: :label_links, source: :target, source_type: 'MergeRequest'
 
   before_validation :strip_whitespace_from_title_and_color
 
diff --git a/app/models/lfs_object.rb b/app/models/lfs_object.rb
index ed95613ee59..6b7f280fb70 100644
--- a/app/models/lfs_object.rb
+++ b/app/models/lfs_object.rb
@@ -3,7 +3,7 @@ class LfsObject < ActiveRecord::Base
   include ObjectStorage::BackgroundMove
 
   has_many :lfs_objects_projects, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-  has_many :projects, -> { auto_include(false) }, through: :lfs_objects_projects
+  has_many :projects, through: :lfs_objects_projects
 
   scope :with_files_stored_locally, -> { where(file_store: [nil, LfsObjectUploader::Store::LOCAL]) }
 
@@ -11,10 +11,12 @@ class LfsObject < ActiveRecord::Base
 
   mount_uploader :file, LfsObjectUploader
 
-  before_save :update_file_store
+  after_save :update_file_store
 
   def update_file_store
-    self.file_store = file.object_store
+    # The file.object_store is set during `uploader.store!`
+    # which happens after object is inserted/updated
+    self.update_column(:file_store, file.object_store)
   end
 
   def project_allowed_access?(project)
diff --git a/app/models/merge_request.rb b/app/models/merge_request.rb
index 91d8be5559b..8f964a488aa 100644
--- a/app/models/merge_request.rb
+++ b/app/models/merge_request.rb
@@ -1,5 +1,5 @@
 class MergeRequest < ActiveRecord::Base
-  include NonatomicInternalId
+  include AtomicInternalId
   include Issuable
   include Noteable
   include Referable
@@ -18,6 +18,8 @@ class MergeRequest < ActiveRecord::Base
   belongs_to :source_project, class_name: "Project"
   belongs_to :merge_user, class_name: "User"
 
+  has_internal_id :iid, scope: :target_project, init: ->(s) { s&.target_project&.merge_requests&.maximum(:iid) }
+
   has_many :merge_request_diffs
 
   has_one :merge_request_diff,
diff --git a/app/models/milestone.rb b/app/models/milestone.rb
index 8e33bab81c1..d14e3a4ded5 100644
--- a/app/models/milestone.rb
+++ b/app/models/milestone.rb
@@ -8,7 +8,7 @@ class Milestone < ActiveRecord::Base
   Started = MilestoneStruct.new('Started', '#started', -3)
 
   include CacheMarkdownField
-  include NonatomicInternalId
+  include AtomicInternalId
   include Sortable
   include Referable
   include StripAttribute
@@ -21,8 +21,11 @@ class Milestone < ActiveRecord::Base
   belongs_to :project
   belongs_to :group
 
+  has_internal_id :iid, scope: :project, init: ->(s) { s&.project&.milestones&.maximum(:iid) }
+  has_internal_id :iid, scope: :group, init: ->(s) { s&.group&.milestones&.maximum(:iid) }
+
   has_many :issues
-  has_many :labels, -> { distinct.reorder('labels.title').auto_include(false) }, through: :issues
+  has_many :labels, -> { distinct.reorder('labels.title') },  through: :issues
   has_many :merge_requests
   has_many :events, as: :target, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
 
diff --git a/app/models/namespace.rb b/app/models/namespace.rb
index 2b63aa33222..c29a53e5ce7 100644
--- a/app/models/namespace.rb
+++ b/app/models/namespace.rb
@@ -248,10 +248,6 @@ class Namespace < ActiveRecord::Base
     all_projects.with_storage_feature(:repository).find_each(&:remove_exports)
   end
 
-  def features
-    []
-  end
-
   def refresh_project_authorizations
     owner.refresh_authorized_projects
   end
diff --git a/app/models/notification_recipient.rb b/app/models/notification_recipient.rb
index b3ffad00a07..2c3580bbdc6 100644
--- a/app/models/notification_recipient.rb
+++ b/app/models/notification_recipient.rb
@@ -83,14 +83,14 @@ class NotificationRecipient
 
   def has_access?
     DeclarativePolicy.subject_scope do
-      return false unless user.can?(:receive_notifications)
-      return true if @skip_read_ability
+      break false unless user.can?(:receive_notifications)
+      break true if @skip_read_ability
 
-      return false if @target && !user.can?(:read_cross_project)
-      return false if @project && !user.can?(:read_project, @project)
+      break false if @target && !user.can?(:read_cross_project)
+      break false if @project && !user.can?(:read_project, @project)
 
-      return true unless read_ability
-      return true unless DeclarativePolicy.has_policy?(@target)
+      break true unless read_ability
+      break true unless DeclarativePolicy.has_policy?(@target)
 
       user.can?(read_ability, @target)
     end
diff --git a/app/models/notification_setting.rb b/app/models/notification_setting.rb
index f6d9b0215fc..9195408551f 100644
--- a/app/models/notification_setting.rb
+++ b/app/models/notification_setting.rb
@@ -47,7 +47,8 @@ class NotificationSetting < ActiveRecord::Base
   ].freeze
 
   EXCLUDED_WATCHER_EVENTS = [
-    :push_to_merge_request
+    :push_to_merge_request,
+    :issue_due
   ].push(*EXCLUDED_PARTICIPATING_EVENTS).freeze
 
   def self.find_or_create_for(source)
diff --git a/app/models/project.rb b/app/models/project.rb
index 5412b1d49c6..140543bc20a 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -143,11 +143,11 @@ class Project < ActiveRecord::Base
   has_one :packagist_service
 
   # TODO: replace these relations with the fork network versions
-  has_one  :forked_project_link, foreign_key: "forked_to_project_id"
-  has_one  :forked_from_project, -> { auto_include(false) }, through:   :forked_project_link
+  has_one  :forked_project_link,  foreign_key: "forked_to_project_id"
+  has_one  :forked_from_project,  through:   :forked_project_link
 
   has_many :forked_project_links, foreign_key: "forked_from_project_id"
-  has_many :forks, -> { auto_include(false) }, through: :forked_project_links, source: :forked_to_project
+  has_many :forks,                through:     :forked_project_links, source: :forked_to_project
   # TODO: replace these relations with the fork network versions
 
   has_one :root_of_fork_network,
@@ -155,7 +155,7 @@ class Project < ActiveRecord::Base
           inverse_of: :root_project,
           class_name: 'ForkNetwork'
   has_one :fork_network_member
-  has_one :fork_network, -> { auto_include(false) }, through: :fork_network_member
+  has_one :fork_network, through: :fork_network_member
 
   # Merge Requests for target project should be removed with it
   has_many :merge_requests, foreign_key: 'target_project_id'
@@ -172,27 +172,27 @@ class Project < ActiveRecord::Base
   has_many :protected_tags
 
   has_many :project_authorizations
-  has_many :authorized_users, -> { auto_include(false) }, through: :project_authorizations, source: :user, class_name: 'User'
+  has_many :authorized_users, through: :project_authorizations, source: :user, class_name: 'User'
   has_many :project_members, -> { where(requested_at: nil) },
     as: :source, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
 
   alias_method :members, :project_members
-  has_many :users, -> { auto_include(false) }, through: :project_members
+  has_many :users, through: :project_members
 
   has_many :requesters, -> { where.not(requested_at: nil) },
     as: :source, class_name: 'ProjectMember', dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
   has_many :members_and_requesters, as: :source, class_name: 'ProjectMember'
 
   has_many :deploy_keys_projects
-  has_many :deploy_keys, -> { auto_include(false) }, through: :deploy_keys_projects
+  has_many :deploy_keys, through: :deploy_keys_projects
   has_many :users_star_projects
-  has_many :starrers, -> { auto_include(false) }, through: :users_star_projects, source: :user
+  has_many :starrers, through: :users_star_projects, source: :user
   has_many :releases
   has_many :lfs_objects_projects, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-  has_many :lfs_objects, -> { auto_include(false) }, through: :lfs_objects_projects
+  has_many :lfs_objects, through: :lfs_objects_projects
   has_many :lfs_file_locks
   has_many :project_group_links
-  has_many :invited_groups, -> { auto_include(false) }, through: :project_group_links, source: :group
+  has_many :invited_groups, through: :project_group_links, source: :group
   has_many :pages_domains
   has_many :todos
   has_many :notification_settings, as: :source, dependent: :delete_all # rubocop:disable Cop/ActiveRecordDependent
@@ -204,7 +204,7 @@ class Project < ActiveRecord::Base
   has_one :statistics, class_name: 'ProjectStatistics'
 
   has_one :cluster_project, class_name: 'Clusters::Project'
-  has_many :clusters, -> { auto_include(false) }, through: :cluster_project, class_name: 'Clusters::Cluster'
+  has_many :clusters, through: :cluster_project, class_name: 'Clusters::Cluster'
 
   # Container repositories need to remove data from the container registry,
   # which is not managed by the DB. Hence we're still using dependent: :destroy
@@ -221,16 +221,16 @@ class Project < ActiveRecord::Base
   has_many :builds, class_name: 'Ci::Build', inverse_of: :project, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
   has_many :build_trace_section_names, class_name: 'Ci::BuildTraceSectionName'
   has_many :runner_projects, class_name: 'Ci::RunnerProject'
-  has_many :runners, -> { auto_include(false) }, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'
+  has_many :runners, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'
   has_many :variables, class_name: 'Ci::Variable'
   has_many :triggers, class_name: 'Ci::Trigger'
   has_many :environments
   has_many :deployments
   has_many :pipeline_schedules, class_name: 'Ci::PipelineSchedule'
   has_many :project_deploy_tokens
-  has_many :deploy_tokens, -> { auto_include(false) }, through: :project_deploy_tokens
+  has_many :deploy_tokens, through: :project_deploy_tokens
 
-  has_many :active_runners, -> { active.auto_include(false) }, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'
+  has_many :active_runners, -> { active }, through: :runner_projects, source: :runner, class_name: 'Ci::Runner'
 
   has_one :auto_devops, class_name: 'ProjectAutoDevops'
   has_many :custom_attributes, class_name: 'ProjectCustomAttribute'
@@ -1643,7 +1643,7 @@ class Project < ActiveRecord::Base
 
   def container_registry_variables
     Gitlab::Ci::Variables::Collection.new.tap do |variables|
-      return variables unless Gitlab.config.registry.enabled
+      break variables unless Gitlab.config.registry.enabled
 
       variables.append(key: 'CI_REGISTRY', value: Gitlab.config.registry.host_port)
 
@@ -1881,6 +1881,10 @@ class Project < ActiveRecord::Base
     memoized_results[cache_key]
   end
 
+  def licensed_features
+    []
+  end
+
   private
 
   def storage
diff --git a/app/models/project_services/flowdock_service.rb b/app/models/project_services/flowdock_service.rb
index 4d23a17a545..da01ac1b7cf 100644
--- a/app/models/project_services/flowdock_service.rb
+++ b/app/models/project_services/flowdock_service.rb
@@ -1,5 +1,51 @@
 require "flowdock-git-hook"
 
+# Flow dock depends on Grit to compute the number of commits between two given
+# commits. To make this depend on Gitaly, a monkey patch is applied
+module Flowdock
+  class Git
+    # pass down a Repository all the way down
+    def repo
+      @options[:repo]
+    end
+
+    def config
+      {}
+    end
+
+    def messages
+      Git::Builder.new(repo: repo,
+                       ref: @ref,
+                       before: @from,
+                       after: @to,
+                       commit_url: @commit_url,
+                       branch_url: @branch_url,
+                       diff_url: @diff_url,
+                       repo_url: @repo_url,
+                       repo_name: @repo_name,
+                       permanent_refs: @permanent_refs,
+                       tags: tags
+                      ).to_hashes
+    end
+
+    class Builder
+      def commits
+        @repo.commits_between(@before, @after).map do |commit|
+          {
+            url: @opts[:commit_url] ? @opts[:commit_url] % [commit.sha] : nil,
+            id: commit.sha,
+            message: commit.message,
+            author: {
+              name: commit.author_name,
+              email: commit.author_email
+            }
+          }
+        end
+      end
+    end
+  end
+end
+
 class FlowdockService < Service
   prop_accessor :token
   validates :token, presence: true, if: :activated?
@@ -34,7 +80,7 @@ class FlowdockService < Service
       data[:before],
       data[:after],
       token: token,
-      repo: project.repository.path_to_repo,
+      repo: project.repository,
       repo_url: "#{Gitlab.config.gitlab.url}/#{project.full_path}",
       commit_url: "#{Gitlab.config.gitlab.url}/#{project.full_path}/commit/%s",
       diff_url: "#{Gitlab.config.gitlab.url}/#{project.full_path}/compare/%s...%s"
diff --git a/app/models/project_statistics.rb b/app/models/project_statistics.rb
index 87a4350f022..5d4e3c34b39 100644
--- a/app/models/project_statistics.rb
+++ b/app/models/project_statistics.rb
@@ -4,15 +4,15 @@ class ProjectStatistics < ActiveRecord::Base
 
   before_save :update_storage_size
 
-  STORAGE_COLUMNS = [:repository_size, :lfs_objects_size, :build_artifacts_size].freeze
-  STATISTICS_COLUMNS = [:commit_count] + STORAGE_COLUMNS
+  COLUMNS_TO_REFRESH = [:repository_size, :lfs_objects_size, :commit_count].freeze
+  INCREMENTABLE_COLUMNS = [:build_artifacts_size].freeze
 
   def total_repository_size
     repository_size + lfs_objects_size
   end
 
   def refresh!(only: nil)
-    STATISTICS_COLUMNS.each do |column, generator|
+    COLUMNS_TO_REFRESH.each do |column, generator|
       if only.blank? || only.include?(column)
         public_send("update_#{column}") # rubocop:disable GitlabSecurity/PublicSend
       end
@@ -34,13 +34,15 @@ class ProjectStatistics < ActiveRecord::Base
     self.lfs_objects_size = project.lfs_objects.sum(:size)
   end
 
-  def update_build_artifacts_size
-    self.build_artifacts_size =
-      project.builds.sum(:artifacts_size) +
-      Ci::JobArtifact.artifacts_size_for(self.project)
+  def update_storage_size
+    self.storage_size = repository_size + lfs_objects_size + build_artifacts_size
   end
 
-  def update_storage_size
-    self.storage_size = STORAGE_COLUMNS.sum(&method(:read_attribute))
+  def self.increment_statistic(project_id, key, amount)
+    raise ArgumentError, "Cannot increment attribute: #{key}" unless key.in?(INCREMENTABLE_COLUMNS)
+    return if amount == 0
+
+    where(project_id: project_id)
+      .update_all(["#{key} = COALESCE(#{key}, 0) + (?)", amount])
   end
 end
diff --git a/app/models/project_wiki.rb b/app/models/project_wiki.rb
index 52e067cb44c..b7e38ceb502 100644
--- a/app/models/project_wiki.rb
+++ b/app/models/project_wiki.rb
@@ -179,7 +179,11 @@ class ProjectWiki
   def commit_details(action, message = nil, title = nil)
     commit_message = message || default_message(action, title)
 
-    Gitlab::Git::Wiki::CommitDetails.new(@user.name, @user.email, commit_message)
+    Gitlab::Git::Wiki::CommitDetails.new(@user.id,
+                                         @user.username,
+                                         @user.name,
+                                         @user.email,
+                                         commit_message)
   end
 
   def default_message(action, title)
diff --git a/app/models/repository.rb b/app/models/repository.rb
index fd1afafe4df..5bdaa7f0720 100644
--- a/app/models/repository.rb
+++ b/app/models/repository.rb
@@ -331,6 +331,7 @@ class Repository
     return unless empty?
 
     expire_method_caches(%i(has_visible_content?))
+    raw_repository.expire_has_local_branches_cache
   end
 
   def lookup_cache
diff --git a/app/models/todo.rb b/app/models/todo.rb
index aad2c1dac4e..a2ab405fdbe 100644
--- a/app/models/todo.rb
+++ b/app/models/todo.rb
@@ -22,7 +22,7 @@ class Todo < ActiveRecord::Base
   belongs_to :author, class_name: "User"
   belongs_to :note
   belongs_to :project
-  belongs_to :target, -> { auto_include(false) }, polymorphic: true, touch: true # rubocop:disable Cop/PolymorphicAssociations
+  belongs_to :target, polymorphic: true, touch: true # rubocop:disable Cop/PolymorphicAssociations
   belongs_to :user
 
   delegate :name, :email, to: :author, prefix: true, allow_nil: true
diff --git a/app/models/user.rb b/app/models/user.rb
index d5c5c0964c5..b0668148972 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -96,23 +96,23 @@ class User < ActiveRecord::Base
   # Groups
   has_many :members
   has_many :group_members, -> { where(requested_at: nil) }, source: 'GroupMember'
-  has_many :groups, -> { auto_include(false) }, through: :group_members
-  has_many :owned_groups, -> { where(members: { access_level: Gitlab::Access::OWNER }).auto_include(false) }, through: :group_members, source: :group
-  has_many :masters_groups, -> { where(members: { access_level: Gitlab::Access::MASTER }).auto_include(false) }, through: :group_members, source: :group
+  has_many :groups, through: :group_members
+  has_many :owned_groups, -> { where(members: { access_level: Gitlab::Access::OWNER }) }, through: :group_members, source: :group
+  has_many :masters_groups, -> { where(members: { access_level: Gitlab::Access::MASTER }) }, through: :group_members, source: :group
 
   # Projects
-  has_many :groups_projects, -> { auto_include(false) }, through: :groups, source: :projects
-  has_many :personal_projects, -> { auto_include(false) }, through: :namespace, source: :projects
+  has_many :groups_projects,          through: :groups, source: :projects
+  has_many :personal_projects,        through: :namespace, source: :projects
   has_many :project_members, -> { where(requested_at: nil) }
-  has_many :projects, -> { auto_include(false) }, through: :project_members
-  has_many :created_projects, foreign_key: :creator_id, class_name: 'Project'
+  has_many :projects,                 through: :project_members
+  has_many :created_projects,         foreign_key: :creator_id, class_name: 'Project'
   has_many :users_star_projects, dependent: :destroy # rubocop:disable Cop/ActiveRecordDependent
-  has_many :starred_projects, -> { auto_include(false) }, through: :users_star_projects, source: :project
+  has_many :starred_projects, through: :users_star_projects, source: :project
   has_many :project_authorizations
-  has_many :authorized_projects, -> { auto_include(false) }, through: :project_authorizations, source: :project
+  has_many :authorized_projects, through: :project_authorizations, source: :project
 
   has_many :user_interacted_projects
-  has_many :project_interactions, -> { auto_include(false) }, through: :user_interacted_projects, source: :project, class_name: 'Project'
+  has_many :project_interactions, through: :user_interacted_projects, source: :project, class_name: 'Project'
 
   has_many :snippets,                 dependent: :destroy, foreign_key: :author_id # rubocop:disable Cop/ActiveRecordDependent
   has_many :notes,                    dependent: :destroy, foreign_key: :author_id # rubocop:disable Cop/ActiveRecordDependent
@@ -132,7 +132,7 @@ class User < ActiveRecord::Base
   has_many :triggers,                 dependent: :destroy, class_name: 'Ci::Trigger', foreign_key: :owner_id # rubocop:disable Cop/ActiveRecordDependent
 
   has_many :issue_assignees
-  has_many :assigned_issues, -> { auto_include(false) }, class_name: "Issue", through: :issue_assignees, source: :issue
+  has_many :assigned_issues, class_name: "Issue", through: :issue_assignees, source: :issue
   has_many :assigned_merge_requests,  dependent: :nullify, foreign_key: :assignee_id, class_name: "MergeRequest" # rubocop:disable Cop/ActiveRecordDependent
 
   has_many :custom_attributes, class_name: 'UserCustomAttribute'
@@ -947,10 +947,13 @@ class User < ActiveRecord::Base
   end
 
   def manageable_groups
-    union = Gitlab::SQL::Union.new([owned_groups.select(:id),
-                                    masters_groups.select(:id)])
-    arel_union = Arel::Nodes::SqlLiteral.new(union.to_sql)
-    owned_and_master_groups = Group.where(Group.arel_table[:id].in(arel_union))
+    union_sql = Gitlab::SQL::Union.new([owned_groups.select(:id), masters_groups.select(:id)]).to_sql
+
+    # Update this line to not use raw SQL when migrated to Rails 5.2.
+    # Either ActiveRecord or Arel constructions are fine.
+    # This was replaced with the raw SQL construction because of bugs in the arel gem.
+    # Bugs were fixed in arel 9.0.0 (Rails 5.2).
+    owned_and_master_groups = Group.where("namespaces.id IN (#{union_sql})") # rubocop:disable GitlabSecurity/SqlInjection
 
     Gitlab::GroupHierarchy.new(owned_and_master_groups).base_and_descendants
   end
diff --git a/app/models/wiki_page.rb b/app/models/wiki_page.rb
index 0f5536415f7..cde79b95062 100644
--- a/app/models/wiki_page.rb
+++ b/app/models/wiki_page.rb
@@ -265,6 +265,15 @@ class WikiPage
     title.present? && self.class.unhyphenize(@page.url_path) != title
   end
 
+  # Updates the current @attributes hash by merging a hash of params
+  def update_attributes(attrs)
+    attrs[:title] = process_title(attrs[:title]) if attrs[:title].present?
+
+    attrs.slice!(:content, :format, :message, :title)
+
+    @attributes.merge!(attrs)
+  end
+
   private
 
   # Process and format the title based on the user input.
@@ -290,15 +299,6 @@ class WikiPage
     File.join(components)
   end
 
-  # Updates the current @attributes hash by merging a hash of params
-  def update_attributes(attrs)
-    attrs[:title] = process_title(attrs[:title]) if attrs[:title].present?
-
-    attrs.slice!(:content, :format, :message, :title)
-
-    @attributes.merge!(attrs)
-  end
-
   def set_attributes
     attributes[:slug] = @page.url_path
     attributes[:title] = @page.title
diff --git a/app/presenters/ci/build_presenter.rb b/app/presenters/ci/build_presenter.rb
index 9afebda19be..4873d7ce662 100644
--- a/app/presenters/ci/build_presenter.rb
+++ b/app/presenters/ci/build_presenter.rb
@@ -1,5 +1,14 @@
 module Ci
   class BuildPresenter < Gitlab::View::Presenter::Delegated
+    CALLOUT_FAILURE_MESSAGES = {
+      unknown_failure: 'There is an unknown failure, please try again',
+      script_failure: 'There has been a script failure. Check the job log for more information',
+      api_failure: 'There has been an API failure, please try again',
+      stuck_or_timeout_failure: 'There has been a timeout failure or the job got stuck. Check your timeout limits or try again',
+      runner_system_failure: 'There has been a runner system failure, please try again',
+      missing_dependency_failure: 'There has been a missing dependency failure, check the job log for more information'
+    }.freeze
+
     presents :build
 
     def erased_by_user?
@@ -35,6 +44,14 @@ module Ci
       "#{subject.name} - #{detailed_status.status_tooltip}"
     end
 
+    def callout_failure_message
+      CALLOUT_FAILURE_MESSAGES[failure_reason.to_sym]
+    end
+
+    def recoverable?
+      failed? && !unrecoverable?
+    end
+
     private
 
     def tooltip_for_badge
@@ -44,5 +61,9 @@ module Ci
     def detailed_status
       @detailed_status ||= subject.detailed_status(user)
     end
+
+    def unrecoverable?
+      script_failure? || missing_dependency_failure?
+    end
   end
 end
diff --git a/app/presenters/project_presenter.rb b/app/presenters/project_presenter.rb
index 484ac64580d..63ead5538cb 100644
--- a/app/presenters/project_presenter.rb
+++ b/app/presenters/project_presenter.rb
@@ -260,7 +260,7 @@ class ProjectPresenter < Gitlab::View::Presenter::Delegated
     if current_user && can?(current_user, :admin_pipeline, project) && repository.gitlab_ci_yml.blank? && !show_auto_devops_callout
       OpenStruct.new(enabled: auto_devops_enabled?,
                      label: auto_devops_enabled? ? _('Auto DevOps enabled') : _('Enable Auto DevOps'),
-                     link: project_settings_ci_cd_path(project, anchor: 'js-general-pipeline-settings'))
+                     link: project_settings_ci_cd_path(project, anchor: 'autodevops-settings'))
     elsif auto_devops_enabled?
       OpenStruct.new(enabled: true,
                      label: _('Auto DevOps enabled'),
diff --git a/app/serializers/entity_date_helper.rb b/app/serializers/entity_date_helper.rb
index 71d9a65fb58..464217123b4 100644
--- a/app/serializers/entity_date_helper.rb
+++ b/app/serializers/entity_date_helper.rb
@@ -1,5 +1,6 @@
 module EntityDateHelper
   include ActionView::Helpers::DateHelper
+  include ActionView::Helpers::TagHelper
 
   def interval_in_words(diff)
     return 'Not started' unless diff
@@ -34,4 +35,30 @@ module EntityDateHelper
 
     duration_hash
   end
+
+  # Generates an HTML-formatted string for remaining dates based on start_date and due_date
+  #
+  # It returns "Past due" for expired entities
+  # It returns "Upcoming" for upcoming entities
+  # If due date is provided, it returns "# days|weeks|months remaining|ago"
+  # If start date is provided and elapsed, with no due date, it returns "# days elapsed"
+  def remaining_days_in_words(entity)
+    if entity.try(:expired?)
+      content_tag(:strong, 'Past due')
+    elsif entity.try(:upcoming?)
+      content_tag(:strong, 'Upcoming')
+    elsif entity.due_date
+      is_upcoming = (entity.due_date - Date.today).to_i > 0
+      time_ago = time_ago_in_words(entity.due_date)
+      content = time_ago.gsub(/\d+/) { |match| "<strong>#{match}</strong>" }
+      content.slice!("about ")
+      content << " " + (is_upcoming ? _("remaining") : _("ago"))
+      content.html_safe
+    elsif entity.start_date && entity.start_date.past?
+      days    = entity.elapsed_days
+      content = content_tag(:strong, days)
+      content << " #{'day'.pluralize(days)} elapsed"
+      content.html_safe
+    end
+  end
 end
diff --git a/app/serializers/job_entity.rb b/app/serializers/job_entity.rb
index 523b522d449..3076fed1674 100644
--- a/app/serializers/job_entity.rb
+++ b/app/serializers/job_entity.rb
@@ -26,6 +26,8 @@ class JobEntity < Grape::Entity
   expose :created_at
   expose :updated_at
   expose :detailed_status, as: :status, with: StatusEntity
+  expose :callout_message, if: -> (*) { failed? }
+  expose :recoverable, if: -> (*) { failed? }
 
   private
 
@@ -50,4 +52,20 @@ class JobEntity < Grape::Entity
   def path_to(route, build)
     send("#{route}_path", build.project.namespace, build.project, build) # rubocop:disable GitlabSecurity/PublicSend
   end
+
+  def failed?
+    build.failed?
+  end
+
+  def callout_message
+    build_presenter.callout_failure_message
+  end
+
+  def recoverable
+    build_presenter.recoverable?
+  end
+
+  def build_presenter
+    @build_presenter ||= build.present
+  end
 end
diff --git a/app/services/ci/register_job_service.rb b/app/services/ci/register_job_service.rb
index e09b445636f..0b087ad73da 100644
--- a/app/services/ci/register_job_service.rb
+++ b/app/services/ci/register_job_service.rb
@@ -4,6 +4,9 @@ module Ci
   class RegisterJobService
     attr_reader :runner
 
+    JOB_QUEUE_DURATION_SECONDS_BUCKETS = [1, 3, 10, 30].freeze
+    JOBS_RUNNING_FOR_PROJECT_MAX_BUCKET = 5.freeze
+
     Result = Struct.new(:build, :valid?)
 
     def initialize(runner)
@@ -41,7 +44,7 @@ module Ci
             build.run!
             register_success(build)
 
-            return Result.new(build, true)
+            return Result.new(build, true) # rubocop:disable Cop/AvoidReturnFromBlocks
           rescue Ci::Build::MissingDependenciesError
             build.drop!(:missing_dependency_failure)
           end
@@ -104,10 +107,22 @@ module Ci
     end
 
     def register_success(job)
-      job_queue_duration_seconds.observe({ shared_runner: @runner.shared? }, Time.now - job.created_at)
+      labels = { shared_runner: runner.shared?,
+                 jobs_running_for_project: jobs_running_for_project(job) }
+
+      job_queue_duration_seconds.observe(labels, Time.now - job.queued_at) unless job.queued_at.nil?
       attempt_counter.increment
     end
 
+    def jobs_running_for_project(job)
+      return '+Inf' unless runner.shared?
+
+      # excluding currently started job
+      running_jobs_count = job.project.builds.running.where(runner: Ci::Runner.shared)
+                              .limit(JOBS_RUNNING_FOR_PROJECT_MAX_BUCKET + 1).count - 1
+      running_jobs_count < JOBS_RUNNING_FOR_PROJECT_MAX_BUCKET ? running_jobs_count : "#{JOBS_RUNNING_FOR_PROJECT_MAX_BUCKET}+"
+    end
+
     def failed_attempt_counter
       @failed_attempt_counter ||= Gitlab::Metrics.counter(:job_register_attempts_failed_total, "Counts the times a runner tries to register a job")
     end
@@ -117,7 +132,7 @@ module Ci
     end
 
     def job_queue_duration_seconds
-      @job_queue_duration_seconds ||= Gitlab::Metrics.histogram(:job_queue_duration_seconds, 'Request handling execution time')
+      @job_queue_duration_seconds ||= Gitlab::Metrics.histogram(:job_queue_duration_seconds, 'Request handling execution time', {}, JOB_QUEUE_DURATION_SECONDS_BUCKETS)
     end
   end
 end
diff --git a/app/services/clusters/gcp/finalize_creation_service.rb b/app/services/clusters/gcp/finalize_creation_service.rb
index 15ab2d54404..84944e95542 100644
--- a/app/services/clusters/gcp/finalize_creation_service.rb
+++ b/app/services/clusters/gcp/finalize_creation_service.rb
@@ -13,7 +13,7 @@ module Clusters
       rescue Google::Apis::ServerError, Google::Apis::ClientError, Google::Apis::AuthorizationError => e
         provider.make_errored!("Failed to request to CloudPlatform; #{e.message}")
       rescue ActiveRecord::RecordInvalid => e
-        provider.make_errored!("Failed to configure GKE Cluster: #{e.message}")
+        provider.make_errored!("Failed to configure Google Kubernetes Engine Cluster: #{e.message}")
       end
 
       private
diff --git a/app/services/clusters/gcp/verify_provision_status_service.rb b/app/services/clusters/gcp/verify_provision_status_service.rb
index f994aacd086..7cc4324677e 100644
--- a/app/services/clusters/gcp/verify_provision_status_service.rb
+++ b/app/services/clusters/gcp/verify_provision_status_service.rb
@@ -17,7 +17,7 @@ module Clusters
           when 'DONE'
             finalize_creation
           else
-            return provider.make_errored!("Unexpected operation status; #{operation.status} #{operation.status_message}")
+            provider.make_errored!("Unexpected operation status; #{operation.status} #{operation.status_message}")
           end
         end
       end
diff --git a/app/services/create_deployment_service.rb b/app/services/create_deployment_service.rb
index 88dfb7a4a90..7e5a77fb056 100644
--- a/app/services/create_deployment_service.rb
+++ b/app/services/create_deployment_service.rb
@@ -19,8 +19,8 @@ class CreateDeploymentService
 
       environment.fire_state_event(action)
 
-      return unless environment.save
-      return if environment.stopped?
+      break unless environment.save
+      break if environment.stopped?
 
       deploy.tap(&:update_merge_request_metrics!)
     end
diff --git a/app/services/import_export_clean_up_service.rb b/app/services/import_export_clean_up_service.rb
index 6442406d77e..74088b970c9 100644
--- a/app/services/import_export_clean_up_service.rb
+++ b/app/services/import_export_clean_up_service.rb
@@ -10,7 +10,7 @@ class ImportExportCleanUpService
 
   def execute
     Gitlab::Metrics.measure(:import_export_clean_up) do
-      return unless File.directory?(path)
+      next unless File.directory?(path)
 
       clean_up_export_files
     end
diff --git a/app/services/labels/transfer_service.rb b/app/services/labels/transfer_service.rb
index 775efed48eb..9b7486cf53b 100644
--- a/app/services/labels/transfer_service.rb
+++ b/app/services/labels/transfer_service.rb
@@ -64,9 +64,14 @@ module Labels
     end
 
     def update_label_links(labels, old_label_id:, new_label_id:)
-      LabelLink.joins(:label)
-        .merge(labels)
-        .where(label_id: old_label_id)
+      # use 'labels' relation to get label_link ids only of issues/MRs
+      # in the project being transferred.
+      # IDs are fetched in a separate query because MySQL doesn't
+      # allow referring of 'label_links' table in UPDATE query:
+      # https://gitlab.com/gitlab-org/gitlab-ce/-/jobs/62435068
+      link_ids = labels.pluck('label_links.id')
+
+      LabelLink.where(id: link_ids, label_id: old_label_id)
         .update_all(label_id: new_label_id)
     end
 
diff --git a/app/services/notification_recipient_service.rb b/app/services/notification_recipient_service.rb
index b82d9c64296..83e59a649b6 100644
--- a/app/services/notification_recipient_service.rb
+++ b/app/services/notification_recipient_service.rb
@@ -203,10 +203,11 @@ module NotificationRecipientService
       attr_reader :action
       attr_reader :previous_assignee
       attr_reader :skip_current_user
-      def initialize(target, current_user, action:, previous_assignee: nil, skip_current_user: true)
+      def initialize(target, current_user, action:, custom_action: nil, previous_assignee: nil, skip_current_user: true)
         @target = target
         @current_user = current_user
         @action = action
+        @custom_action = custom_action
         @previous_assignee = previous_assignee
         @skip_current_user = skip_current_user
       end
@@ -236,7 +237,13 @@ module NotificationRecipientService
           add_mentions(current_user, target: target)
 
           # Add the assigned users, if any
-          assignees = custom_action == :new_issue ? target.assignees : target.assignee
+          assignees = case custom_action
+                      when :new_issue
+                        target.assignees
+                      else
+                        target.assignee
+                      end
+
           # We use the `:participating` notification level in order to match existing legacy behavior as captured
           # in existing specs (notification_service_spec.rb ~ line 507)
           add_recipients(assignees, :participating, NotificationReason::ASSIGNED) if assignees
diff --git a/app/services/notification_service.rb b/app/services/notification_service.rb
index f94c76cf3ac..274161df946 100644
--- a/app/services/notification_service.rb
+++ b/app/services/notification_service.rb
@@ -373,6 +373,20 @@ class NotificationService
     end
   end
 
+  def issue_due(issue)
+    recipients = NotificationRecipientService.build_recipients(
+      issue,
+      issue.author,
+      action: 'due',
+      custom_action: :issue_due,
+      skip_current_user: false
+    )
+
+    recipients.each do |recipient|
+      mailer.send(:issue_due_email, recipient.user.id, issue.id, recipient.reason).deliver_later
+    end
+  end
+
   protected
 
   def new_resource_email(target, method)
diff --git a/app/services/projects/create_from_template_service.rb b/app/services/projects/create_from_template_service.rb
index a549cfbabea..29b133cc466 100644
--- a/app/services/projects/create_from_template_service.rb
+++ b/app/services/projects/create_from_template_service.rb
@@ -8,9 +8,10 @@ module Projects
       template_name = params.delete(:template_name)
       file = Gitlab::ProjectTemplate.find(template_name).file
 
+      override_params = params.dup
       params[:file] = file
 
-      GitlabProjectsImportService.new(current_user, params).execute
+      GitlabProjectsImportService.new(current_user, params, override_params).execute
 
     ensure
       file&.close
diff --git a/app/services/projects/destroy_service.rb b/app/services/projects/destroy_service.rb
index aa14206db3b..44e869851ca 100644
--- a/app/services/projects/destroy_service.rb
+++ b/app/services/projects/destroy_service.rb
@@ -137,7 +137,7 @@ module Projects
       return true unless Gitlab.config.registry.enabled
 
       ContainerRepository.build_root_repository(project).tap do |repository|
-        return repository.has_tags? ? repository.delete_tags! : true
+        break repository.has_tags? ? repository.delete_tags! : true
       end
     end
 
diff --git a/app/services/repository_archive_clean_up_service.rb b/app/services/repository_archive_clean_up_service.rb
index aa84d36a206..9a88459b511 100644
--- a/app/services/repository_archive_clean_up_service.rb
+++ b/app/services/repository_archive_clean_up_service.rb
@@ -10,7 +10,7 @@ class RepositoryArchiveCleanUpService
 
   def execute
     Gitlab::Metrics.measure(:repository_archive_clean_up) do
-      return unless File.directory?(path)
+      next unless File.directory?(path)
 
       clean_up_old_archives
       clean_up_empty_directories
diff --git a/app/services/system_note_service.rb b/app/services/system_note_service.rb
index 00bf5434b7f..958ef065012 100644
--- a/app/services/system_note_service.rb
+++ b/app/services/system_note_service.rb
@@ -159,7 +159,7 @@ module SystemNoteService
     body = if noteable.time_estimate == 0
              "removed time estimate"
            else
-             "changed time estimate to #{parsed_time}"
+             "changed time estimate to #{parsed_time},"
            end
 
     create_note(NoteSummary.new(noteable, project, author, body, action: 'time_tracking'))
diff --git a/app/services/test_hooks/base_service.rb b/app/services/test_hooks/base_service.rb
index e9aefb1fb75..aadc1ea644b 100644
--- a/app/services/test_hooks/base_service.rb
+++ b/app/services/test_hooks/base_service.rb
@@ -19,7 +19,7 @@ module TestHooks
       error_message = catch(:validation_error) do
         sample_data = self.__send__(trigger_data_method) # rubocop:disable GitlabSecurity/PublicSend
 
-        return hook.execute(sample_data, trigger_key)
+        return hook.execute(sample_data, trigger_key) # rubocop:disable Cop/AvoidReturnFromBlocks
       end
 
       error(error_message)
diff --git a/app/uploaders/job_artifact_uploader.rb b/app/uploaders/job_artifact_uploader.rb
index dd86753479d..2a5a830ce4f 100644
--- a/app/uploaders/job_artifact_uploader.rb
+++ b/app/uploaders/job_artifact_uploader.rb
@@ -6,10 +6,10 @@ class JobArtifactUploader < GitlabUploader
 
   storage_options Gitlab.config.artifacts
 
-  def size
-    return super if model.size.nil?
+  def cached_size
+    return model.size if model.size.present? && !model.file_changed?
 
-    model.size
+    size
   end
 
   def store_dir
@@ -20,7 +20,7 @@ class JobArtifactUploader < GitlabUploader
     if file_storage?
       File.open(path, "rb") if path
     else
-      ::Gitlab::Ci::Trace::HttpIO.new(url, size) if url
+      ::Gitlab::Ci::Trace::HttpIO.new(url, cached_size) if url
     end
   end
 
diff --git a/app/uploaders/object_storage.rb b/app/uploaders/object_storage.rb
index bd258e04d3f..a3549cada95 100644
--- a/app/uploaders/object_storage.rb
+++ b/app/uploaders/object_storage.rb
@@ -183,14 +183,6 @@ module ObjectStorage
           StoreURL: connection.put_object_url(remote_store_path, upload_path, expire_at, options)
         }
       end
-
-      def default_object_store
-        if self.object_store_enabled? && self.direct_upload_enabled?
-          Store::REMOTE
-        else
-          Store::LOCAL
-        end
-      end
     end
 
     # allow to configure and overwrite the filename
@@ -211,12 +203,13 @@ module ObjectStorage
     end
 
     def object_store
-      @object_store ||= model.try(store_serialization_column) || self.class.default_object_store
+      # We use Store::LOCAL as null value indicates the local storage
+      @object_store ||= model.try(store_serialization_column) || Store::LOCAL
     end
 
     # rubocop:disable Gitlab/ModuleWithInstanceVariables
     def object_store=(value)
-      @object_store = value || self.class.default_object_store
+      @object_store = value || Store::LOCAL
       @storage = storage_for(object_store)
     end
     # rubocop:enable Gitlab/ModuleWithInstanceVariables
@@ -302,6 +295,15 @@ module ObjectStorage
       super
     end
 
+    def store!(new_file = nil)
+      # when direct upload is enabled, always store on remote storage
+      if self.class.object_store_enabled? && self.class.direct_upload_enabled?
+        self.object_store = Store::REMOTE
+      end
+
+      super
+    end
+
     private
 
     def schedule_background_upload?
diff --git a/app/views/admin/application_settings/_repository_storage.html.haml b/app/views/admin/application_settings/_repository_storage.html.haml
index ac31977e1a9..4eebb59110a 100644
--- a/app/views/admin/application_settings/_repository_storage.html.haml
+++ b/app/views/admin/application_settings/_repository_storage.html.haml
@@ -21,7 +21,7 @@
           .help-block
             Manage repository storage paths. Learn more in the
             = succeed "." do
-              = link_to "repository storages documentation", help_page_path("administration/repository_storages")
+              = link_to "repository storages documentation", help_page_path("administration/repository_storage_paths")
     .sub-section
       %h4 Circuit breaker
       .form-group
diff --git a/app/views/admin/dashboard/index.html.haml b/app/views/admin/dashboard/index.html.haml
index 05c41082882..bbf0e0fb95c 100644
--- a/app/views/admin/dashboard/index.html.haml
+++ b/app/views/admin/dashboard/index.html.haml
@@ -126,6 +126,7 @@
               GitLab
               %span.pull-right
                 = Gitlab::VERSION
+                = "(#{Gitlab::REVISION})"
             %p
               GitLab Shell
               %span.pull-right
diff --git a/app/views/dashboard/issues.atom.builder b/app/views/dashboard/issues.atom.builder
index 70ec6bc6257..d7b6fb9a4a1 100644
--- a/app/views/dashboard/issues.atom.builder
+++ b/app/views/dashboard/issues.atom.builder
@@ -1,5 +1,5 @@
 xml.title   "#{current_user.name} issues"
-xml.link    href: url_for(params), rel: "self", type: "application/atom+xml"
+xml.link    href: url_for(safe_params), rel: "self", type: "application/atom+xml"
 xml.link    href: issues_dashboard_url, rel: "alternate", type: "text/html"
 xml.id      issues_dashboard_url
 xml.updated @issues.first.updated_at.xmlschema if @issues.reorder(nil).any?
diff --git a/app/views/dashboard/issues.html.haml b/app/views/dashboard/issues.html.haml
index bb472b4c900..4bf04dadf01 100644
--- a/app/views/dashboard/issues.html.haml
+++ b/app/views/dashboard/issues.html.haml
@@ -2,12 +2,12 @@
 - page_title _("Issues")
 - @breadcrumb_link = issues_dashboard_path(assignee_id: current_user.id)
 = content_for :meta_tags do
-  = auto_discovery_link_tag(:atom, params.merge(rss_url_options), title: "#{current_user.name} issues")
+  = auto_discovery_link_tag(:atom, safe_params.merge(rss_url_options).to_h, title: "#{current_user.name} issues")
 
 .top-area
   = render 'shared/issuable/nav', type: :issues, display_count: !@no_filters_set
   .nav-controls
-    = link_to params.merge(rss_url_options), class: 'btn has-tooltip', data: { container: 'body' }, title: 'Subscribe' do
+    = link_to safe_params.merge(rss_url_options), class: 'btn has-tooltip', data: { container: 'body' }, title: 'Subscribe' do
       = icon('rss')
     = render 'shared/new_project_item_select', path: 'issues/new', label: "New issue", with_feature_enabled: 'issues', type: :issues
 
diff --git a/app/views/discussions/_diff_with_notes.html.haml b/app/views/discussions/_diff_with_notes.html.haml
index 8680ec2e298..646e89e9bd1 100644
--- a/app/views/discussions/_diff_with_notes.html.haml
+++ b/app/views/discussions/_diff_with_notes.html.haml
@@ -7,7 +7,7 @@
 - unless expanded
   - diff_data = { lines_path: project_merge_request_discussion_path(discussion.project, discussion.noteable, discussion) }
 
-.diff-file.file-holder{ class: diff_file_class, data: diff_data }
+.diff-file.file-holder.js-lazy-load-discussion{ class: diff_file_class, data: diff_data }
   .js-file-title.file-title.file-title-flex-parent
     .file-header-content
       = render "projects/diffs/file_header", diff_file: diff_file, url: discussion_path(discussion), show_toggle: false
@@ -28,8 +28,11 @@
           %tr.line_holder.line-holder-placeholder
             %td.old_line.diff-line-num
             %td.new_line.diff-line-num
-            %td.line_content
+            %td.line_content.js-success-lazy-load
               .js-code-placeholder
+            %td.js-error-lazy-load-diff.hidden.diff-loading-error-block
+              - button = button_tag(_("Try again"), class: "btn-link btn-link-retry btn-no-padding js-toggle-lazy-diff-retry-button")
+              = _("Unable to load the diff. %{button_try_again}").html_safe % { button_try_again: button}
           = render "discussions/diff_discussion", discussions: [discussion], expanded: true
   - else
     - partial = (diff_file.new_file? || diff_file.deleted_file?) ? 'single_image_diff' : 'replaced_image_diff'
diff --git a/app/views/groups/issues.atom.builder b/app/views/groups/issues.atom.builder
index a239ea8caf0..2a385b661e5 100644
--- a/app/views/groups/issues.atom.builder
+++ b/app/views/groups/issues.atom.builder
@@ -1,5 +1,5 @@
 xml.title   "#{@group.name} issues"
-xml.link    href: url_for(params), rel: "self", type: "application/atom+xml"
+xml.link    href: url_for(safe_params), rel: "self", type: "application/atom+xml"
 xml.link    href: issues_group_url, rel: "alternate", type: "text/html"
 xml.id      issues_group_url
 xml.updated @issues.first.updated_at.xmlschema if @issues.reorder(nil).any?
diff --git a/app/views/groups/issues.html.haml b/app/views/groups/issues.html.haml
index 36df03302e8..bbfbea4ac7a 100644
--- a/app/views/groups/issues.html.haml
+++ b/app/views/groups/issues.html.haml
@@ -1,6 +1,6 @@
 - page_title "Issues"
 = content_for :meta_tags do
-  = auto_discovery_link_tag(:atom, params.merge(rss_url_options), title: "#{@group.name} issues")
+  = auto_discovery_link_tag(:atom, safe_params.merge(rss_url_options).to_h, title: "#{@group.name} issues")
 
 - if group_issues_count(state: 'all').zero?
   = render 'shared/empty_states/issues', project_select_button: true
diff --git a/app/views/layouts/mailer.text.erb b/app/views/layouts/mailer.text.erb
index 198f30a1dc4..8e20c4a4b2a 100644
--- a/app/views/layouts/mailer.text.erb
+++ b/app/views/layouts/mailer.text.erb
@@ -1,4 +1,4 @@
 <%= yield -%>
 
----
+-- <%# signature marker %>
 You're receiving this email because of your account on <%= Gitlab.config.gitlab.host %>.
diff --git a/app/views/layouts/notify.text.erb b/app/views/layouts/notify.text.erb
index de48f548a1b..9dc490efa9a 100644
--- a/app/views/layouts/notify.text.erb
+++ b/app/views/layouts/notify.text.erb
@@ -1,6 +1,6 @@
 <%= yield -%>
 
----
+-- <%# signature marker %>
 <%  if @target_url -%>
 <%    if @reply_by_email -%>
 <%=     "Reply to this email directly or view it on GitLab: #{@target_url}" -%>
diff --git a/app/views/notify/issue_due_email.html.haml b/app/views/notify/issue_due_email.html.haml
new file mode 100644
index 00000000000..e81144b8fcb
--- /dev/null
+++ b/app/views/notify/issue_due_email.html.haml
@@ -0,0 +1,12 @@
+%p.details
+  #{link_to @issue.author_name, user_url(@issue.author)}'s issue is due soon.
+
+- if @issue.assignees.any?
+  %p
+    Assignee: #{@issue.assignee_list}
+%p
+  This issue is due on: #{@issue.due_date.to_s(:medium)}
+
+- if @issue.description
+  %div
+  = markdown(@issue.description, pipeline: :email, author: @issue.author)
diff --git a/app/views/notify/issue_due_email.text.erb b/app/views/notify/issue_due_email.text.erb
new file mode 100644
index 00000000000..3c7a57a8a2e
--- /dev/null
+++ b/app/views/notify/issue_due_email.text.erb
@@ -0,0 +1,7 @@
+The following issue is due on <%= @issue.due_date %>:
+
+Issue <%= @issue.iid %>: <%= url_for(project_issue_url(@issue.project, @issue)) %>
+Author:    <%= @issue.author_name %>
+Assignee:  <%= @issue.assignee_list %>
+
+<%= @issue.description %>
diff --git a/app/views/profiles/two_factor_auths/show.html.haml b/app/views/profiles/two_factor_auths/show.html.haml
index 1bd10018b40..d1eae05c46c 100644
--- a/app/views/profiles/two_factor_auths/show.html.haml
+++ b/app/views/profiles/two_factor_auths/show.html.haml
@@ -20,7 +20,7 @@
       - else
         %p
           Download the Google Authenticator application from App Store or Google Play Store and scan this code.
-          More information is available in the #{link_to('documentation', help_page_path('profile/two_factor_authentication'))}.
+          More information is available in the #{link_to('documentation', help_page_path('user/profile/account/two_factor_authentication'))}.
         .row.append-bottom-10
           .col-md-4
             = raw @qr_code
diff --git a/app/views/projects/blob/_viewer.html.haml b/app/views/projects/blob/_viewer.html.haml
index 9c760c81527..b9663bbba15 100644
--- a/app/views/projects/blob/_viewer.html.haml
+++ b/app/views/projects/blob/_viewer.html.haml
@@ -4,7 +4,7 @@
 - load_async = local_assigns.fetch(:load_async, viewer.load_async? && render_error.nil?)
 - external_embed = local_assigns.fetch(:external_embed, false)
 
-- viewer_url = local_assigns.fetch(:viewer_url) { url_for(params.merge(viewer: viewer.type, format: :json)) } if load_async
+- viewer_url = local_assigns.fetch(:viewer_url) { url_for(safe_params.merge(viewer: viewer.type, format: :json)) } if load_async
 .blob-viewer{ data: { type: viewer.type, rich_type: rich_type, url: viewer_url }, class: ('hidden' if hidden) }
   - if render_error
     = render 'projects/blob/render_error', viewer: viewer
diff --git a/app/views/projects/branches/_branch.html.haml b/app/views/projects/branches/_branch.html.haml
index 71176acd12d..d0c01f95cb7 100644
--- a/app/views/projects/branches/_branch.html.haml
+++ b/app/views/projects/branches/_branch.html.haml
@@ -29,7 +29,7 @@
         = s_('Branches|Cant find HEAD commit for this branch')
 
   - if branch.name != @repository.root_ref
-    .divergence-graph{ title: s_('%{number_commits_behind} commits behind %{default_branch}, %{number_commits_ahead} commits ahead') % { number_commits_behind: diverging_count_label(number_commits_behind),
+    .divergence-graph.hidden-xs{ title: s_('%{number_commits_behind} commits behind %{default_branch}, %{number_commits_ahead} commits ahead') % { number_commits_behind: diverging_count_label(number_commits_behind),
       default_branch: @repository.root_ref,
       number_commits_ahead: diverging_count_label(number_commits_ahead) } }
       .graph-side
diff --git a/app/views/projects/clusters/new.html.haml b/app/views/projects/clusters/new.html.haml
index ebb7d247125..e004966bdcc 100644
--- a/app/views/projects/clusters/new.html.haml
+++ b/app/views/projects/clusters/new.html.haml
@@ -8,6 +8,6 @@
     %h4.prepend-top-0= s_('ClusterIntegration|Choose how to set up Kubernetes cluster integration')
 
     %p= s_('ClusterIntegration|Create a new Kubernetes cluster on Google Kubernetes Engine right from GitLab')
-    = link_to s_('ClusterIntegration|Create on GKE'), gcp_new_namespace_project_clusters_path(@project.namespace, @project), class: 'btn append-bottom-20'
+    = link_to s_('ClusterIntegration|Create on Google Kubernetes Engine'), gcp_new_namespace_project_clusters_path(@project.namespace, @project), class: 'btn append-bottom-20'
     %p= s_('ClusterIntegration|Enter the details for an existing Kubernetes cluster')
     = link_to s_('ClusterIntegration|Add an existing Kubernetes cluster'), user_new_namespace_project_clusters_path(@project.namespace, @project), class: 'btn append-bottom-20'
diff --git a/app/views/projects/commits/_commit.html.haml b/app/views/projects/commits/_commit.html.haml
index 289bfdd69bc..3fd0fa348b3 100644
--- a/app/views/projects/commits/_commit.html.haml
+++ b/app/views/projects/commits/_commit.html.haml
@@ -22,7 +22,7 @@
       = author_avatar(commit, size: 36)
 
     .commit-detail.flex-list
-      .commit-content
+      .commit-content.qa-commit-content
         - if view_details && merge_request
           = link_to commit.title, project_commit_path(project, commit.id, merge_request_iid: merge_request.iid), class: "commit-row-message item-title"
         - else
diff --git a/app/views/projects/diffs/_collapsed.html.haml b/app/views/projects/diffs/_collapsed.html.haml
index 8772bd4705f..5762f4d86d7 100644
--- a/app/views/projects/diffs/_collapsed.html.haml
+++ b/app/views/projects/diffs/_collapsed.html.haml
@@ -1,5 +1,5 @@
 - diff_file = viewer.diff_file
-- url = url_for(params.merge(action: :diff_for_path, old_path: diff_file.old_path, new_path: diff_file.new_path, file_identifier: diff_file.file_identifier))
+- url = url_for(safe_params.merge(action: :diff_for_path, old_path: diff_file.old_path, new_path: diff_file.new_path, file_identifier: diff_file.file_identifier))
 .nothing-here-block.diff-collapsed{ data: { diff_for_path: url } }
   This diff is collapsed.
   %a.click-to-expand Click to expand it.
diff --git a/app/views/projects/empty.html.haml b/app/views/projects/empty.html.haml
index b15fe514a08..2f69da593cd 100644
--- a/app/views/projects/empty.html.haml
+++ b/app/views/projects/empty.html.haml
@@ -22,7 +22,7 @@
 
       %hr
       %p
-        - link_to_auto_devops_settings = link_to(s_('AutoDevOps|enable Auto DevOps (Beta)'), project_settings_ci_cd_path(@project, anchor: 'js-general-pipeline-settings'))
+        - link_to_auto_devops_settings = link_to(s_('AutoDevOps|enable Auto DevOps (Beta)'), project_settings_ci_cd_path(@project, anchor: 'autodevops-settings'))
         - link_to_add_kubernetes_cluster = link_to(s_('AutoDevOps|add a Kubernetes cluster'), new_project_cluster_path(@project))
         = s_('AutoDevOps|You can automatically build and test your application if you %{link_to_auto_devops_settings} for this project. You can automatically deploy it as well, if you %{link_to_add_kubernetes_cluster}.').html_safe % { link_to_auto_devops_settings: link_to_auto_devops_settings, link_to_add_kubernetes_cluster: link_to_add_kubernetes_cluster }
 
diff --git a/app/views/projects/issues/_issue.html.haml b/app/views/projects/issues/_issue.html.haml
index 0c58dd60e2c..e27f5658e87 100644
--- a/app/views/projects/issues/_issue.html.haml
+++ b/app/views/projects/issues/_issue.html.haml
@@ -26,7 +26,7 @@
           - if issue.milestone
             %span.issuable-milestone.hidden-xs
               &nbsp;
-              = link_to project_issues_path(issue.project, milestone_title: issue.milestone.title), data: { html: 1, toggle: 'tooltip', title: issuable_milestone_tooltip_title(issue) } do
+              = link_to project_issues_path(issue.project, milestone_title: issue.milestone.title), data: { html: 1, toggle: 'tooltip', title: milestone_tooltip_due_date(issue.milestone) } do
                 = icon('clock-o')
                 = issue.milestone.title
           - if issue.due_date
diff --git a/app/views/projects/issues/_nav_btns.html.haml b/app/views/projects/issues/_nav_btns.html.haml
index dd1a836fa20..297b928f020 100644
--- a/app/views/projects/issues/_nav_btns.html.haml
+++ b/app/views/projects/issues/_nav_btns.html.haml
@@ -1,4 +1,4 @@
-= link_to params.merge(rss_url_options), class: 'btn btn-default append-right-10 has-tooltip', title: 'Subscribe' do
+= link_to safe_params.merge(rss_url_options), class: 'btn btn-default append-right-10 has-tooltip', title: 'Subscribe' do
   = icon('rss')
 - if @can_bulk_update
   = button_tag "Edit issues", class: "btn btn-default append-right-10 js-bulk-update-toggle"
diff --git a/app/views/projects/issues/index.atom.builder b/app/views/projects/issues/index.atom.builder
index 4029926f373..6330245954e 100644
--- a/app/views/projects/issues/index.atom.builder
+++ b/app/views/projects/issues/index.atom.builder
@@ -1,5 +1,5 @@
 xml.title   "#{@project.name} issues"
-xml.link    href: url_for(params), rel: "self", type: "application/atom+xml"
+xml.link    href: url_for(safe_params), rel: "self", type: "application/atom+xml"
 xml.link    href: project_issues_url(@project), rel: "alternate", type: "text/html"
 xml.id      project_issues_url(@project)
 xml.updated @issues.first.updated_at.xmlschema if @issues.reorder(nil).any?
diff --git a/app/views/projects/issues/index.html.haml b/app/views/projects/issues/index.html.haml
index c427a9eedc2..1e7737aeb97 100644
--- a/app/views/projects/issues/index.html.haml
+++ b/app/views/projects/issues/index.html.haml
@@ -5,7 +5,7 @@
 - new_issue_email = @project.new_issuable_address(current_user, 'issue')
 
 = content_for :meta_tags do
-  = auto_discovery_link_tag(:atom, params.merge(rss_url_options), title: "#{@project.name} issues")
+  = auto_discovery_link_tag(:atom, safe_params.merge(rss_url_options).to_h, title: "#{@project.name} issues")
 
 - if project_issues(@project).exists?
   %div{ class: (container_class) }
diff --git a/app/views/projects/jobs/_sidebar.html.haml b/app/views/projects/jobs/_sidebar.html.haml
index 0b57ebedebd..7f0bef5ede0 100644
--- a/app/views/projects/jobs/_sidebar.html.haml
+++ b/app/views/projects/jobs/_sidebar.html.haml
@@ -1,15 +1,8 @@
 %aside.right-sidebar.right-sidebar-expanded.build-sidebar.js-build-sidebar.js-right-sidebar{ data: { "offset-top" => "101", "spy" => "affix" } }
   .sidebar-container
     .blocks-container
-      .block
-        %strong.inline.prepend-top-8
-          = @build.name
-        - if can?(current_user, :update_build, @build) && @build.retryable?
-          = link_to "Retry", retry_namespace_project_job_path(@project.namespace, @project, @build), class: 'js-retry-button pull-right btn btn-inverted-secondary btn-retry visible-md-block visible-lg-block', method: :post
-        %a.gutter-toggle.pull-right.visible-xs-block.visible-sm-block.js-sidebar-build-toggle{ href: "#", 'aria-label': 'Toggle Sidebar', role: 'button' }
-          = icon('angle-double-right')
 
-      #js-details-block-vue
+      #js-details-block-vue{ data: { can_user_retry: can?(current_user, :update_build, @build) && @build.retryable? } }
 
       - if can?(current_user, :read_build, @project) && (@build.artifacts? || @build.artifacts_expired?)
         .block
diff --git a/app/views/projects/merge_requests/_merge_request.html.haml b/app/views/projects/merge_requests/_merge_request.html.haml
index a94267deeb2..027a9ff1416 100644
--- a/app/views/projects/merge_requests/_merge_request.html.haml
+++ b/app/views/projects/merge_requests/_merge_request.html.haml
@@ -23,7 +23,7 @@
         - if merge_request.milestone
           %span.issuable-milestone.hidden-xs
             &nbsp;
-            = link_to project_merge_requests_path(merge_request.project, milestone_title: merge_request.milestone.title), data: { html: 1, toggle: 'tooltip', title: issuable_milestone_tooltip_title(merge_request) } do
+            = link_to project_merge_requests_path(merge_request.project, milestone_title: merge_request.milestone.title), data: { html: 1, toggle: 'tooltip', title: milestone_tooltip_due_date(merge_request.milestone) } do
               = icon('clock-o')
               = merge_request.milestone.title
         - if merge_request.target_project.default_branch != merge_request.target_branch
diff --git a/app/views/projects/merge_requests/creations/_new_compare.html.haml b/app/views/projects/merge_requests/creations/_new_compare.html.haml
index 9d5cebdda53..f81db9b4e28 100644
--- a/app/views/projects/merge_requests/creations/_new_compare.html.haml
+++ b/app/views/projects/merge_requests/creations/_new_compare.html.haml
@@ -3,7 +3,7 @@
 
 = form_for [@project.namespace.becomes(Namespace), @project, @merge_request], url: project_new_merge_request_path(@project), method: :get, html: { class: "merge-request-form form-inline js-requires-input" } do |f|
   .hide.alert.alert-danger.mr-compare-errors
-  .merge-request-branches.js-merge-request-new-compare.row{ 'data-target-project-url': project_new_merge_request_update_branches_path(@source_project), 'data-source-branch-url': project_new_merge_request_branch_from_path(@source_project), 'data-target-branch-url': project_new_merge_request_branch_to_path(@source_project) }
+  .js-merge-request-new-compare.row{ 'data-target-project-url': project_new_merge_request_update_branches_path(@source_project), 'data-source-branch-url': project_new_merge_request_branch_from_path(@source_project), 'data-target-branch-url': project_new_merge_request_branch_to_path(@source_project) }
     .col-md-6
       .panel.panel-default.panel-new-merge-request
         .panel-heading
diff --git a/app/views/projects/merge_requests/creations/_new_submit.html.haml b/app/views/projects/merge_requests/creations/_new_submit.html.haml
index 376ac377562..68780cedeb1 100644
--- a/app/views/projects/merge_requests/creations/_new_submit.html.haml
+++ b/app/views/projects/merge_requests/creations/_new_submit.html.haml
@@ -26,16 +26,16 @@
   - else
     %ul.merge-request-tabs.nav-links.no-top.no-bottom
       %li.commits-tab.active
-        = link_to url_for(params), data: {target: 'div#commits', action: 'new', toggle: 'tab'} do
+        = link_to url_for(safe_params), data: {target: 'div#commits', action: 'new', toggle: 'tab'} do
           Commits
           %span.badge= @commits.size
       - if @pipelines.any?
         %li.builds-tab
-          = link_to url_for(params.merge(action: 'pipelines')), data: {target: 'div#pipelines', action: 'pipelines', toggle: 'tab'} do
+          = link_to url_for(safe_params.merge(action: 'pipelines')), data: {target: 'div#pipelines', action: 'pipelines', toggle: 'tab'} do
             Pipelines
             %span.badge= @pipelines.size
       %li.diffs-tab
-        = link_to url_for(params.merge(action: 'diffs')), data: {target: 'div#diffs', action: 'diffs', toggle: 'tab'} do
+        = link_to url_for(safe_params.merge(action: 'diffs')), data: {target: 'div#diffs', action: 'diffs', toggle: 'tab'} do
           Changes
           %span.badge= @merge_request.diff_size
 
@@ -46,7 +46,7 @@
         -# This tab is always loaded via AJAX
       - if @pipelines.any?
         #pipelines.pipelines.tab-pane
-          = render 'projects/merge_requests/pipelines', endpoint: url_for(params.merge(action: 'pipelines', format: :json)), disable_initialization: true
+          = render 'projects/merge_requests/pipelines', endpoint: url_for(safe_params.merge(action: 'pipelines', format: :json)), disable_initialization: true
 
   .mr-loading-status
     = spinner
diff --git a/app/views/projects/pipelines/new.html.haml b/app/views/projects/pipelines/new.html.haml
index 877101b05ca..8f2142af2ce 100644
--- a/app/views/projects/pipelines/new.html.haml
+++ b/app/views/projects/pipelines/new.html.haml
@@ -1,24 +1,25 @@
 - breadcrumb_title "Pipelines"
-- page_title "New Pipeline"
+- page_title = s_("Pipeline|Run Pipeline")
 
 %h3.page-title
-  New Pipeline
+  = s_("Pipeline|Run Pipeline")
 %hr
 
 = form_for @pipeline, as: :pipeline, url: project_pipelines_path(@project), html: { id: "new-pipeline-form", class: "form-horizontal js-new-pipeline-form js-requires-input" } do |f|
   = form_errors(@pipeline)
   .form-group
-    = f.label :ref, 'Create for', class: 'control-label'
+    = f.label :ref, s_('Pipeline|Run on'), class: 'control-label'
     .col-sm-10
       = hidden_field_tag 'pipeline[ref]', params[:ref] || @project.default_branch
       = dropdown_tag(params[:ref] || @project.default_branch,
                      options: { toggle_class: 'js-branch-select wide git-revision-dropdown-toggle',
-                                filter: true, dropdown_class: "dropdown-menu-selectable git-revision-dropdown", placeholder: "Search branches",
+                                filter: true, dropdown_class: "dropdown-menu-selectable git-revision-dropdown", placeholder: s_("Pipeline|Search branches"),
                                 data: { selected: params[:ref] || @project.default_branch, field_name: 'pipeline[ref]' } })
-      .help-block Existing branch name, tag
+      .help-block
+        = s_("Pipeline|Existing branch name, tag")
   .form-actions
-    = f.submit 'Create pipeline', class: 'btn btn-create', tabindex: 3
-    = link_to 'Cancel', project_pipelines_path(@project), class: 'btn btn-cancel'
+    = f.submit s_('Pipeline|Run pipeline'), class: 'btn btn-success', tabindex: 3
+    = link_to 'Cancel', project_pipelines_path(@project), class: 'btn btn-default pull-right'
 
 -# haml-lint:disable InlineJavaScript
 %script#availableRefs{ type: "application/json" }= @project.repository.ref_names.to_json.html_safe
diff --git a/app/views/projects/protected_branches/_create_protected_branch.html.haml b/app/views/projects/protected_branches/_create_protected_branch.html.haml
index 98d56a3e5c5..12ccae10260 100644
--- a/app/views/projects/protected_branches/_create_protected_branch.html.haml
+++ b/app/views/projects/protected_branches/_create_protected_branch.html.haml
@@ -7,8 +7,8 @@
 - content_for :push_access_levels do
   .push_access_levels-container
     = dropdown_tag('Select',
-                    options: { toggle_class: 'js-allowed-to-push wide',
-                    dropdown_class: 'dropdown-menu-selectable capitalize-header',
+                    options: { toggle_class: 'js-allowed-to-push qa-allowed-to-push-select wide',
+                    dropdown_class: 'dropdown-menu-selectable qa-allowed-to-push-dropdown capitalize-header',
                     data: { field_name: 'protected_branch[push_access_levels_attributes][0][access_level]', input_id: 'push_access_levels_attributes' }})
 
 = render 'projects/protected_branches/shared/create_protected_branch'
diff --git a/app/views/projects/protected_branches/_update_protected_branch.html.haml b/app/views/projects/protected_branches/_update_protected_branch.html.haml
index c61b2951e1e..98363f2018a 100644
--- a/app/views/projects/protected_branches/_update_protected_branch.html.haml
+++ b/app/views/projects/protected_branches/_update_protected_branch.html.haml
@@ -6,5 +6,5 @@
 %td
   = hidden_field_tag "allowed_to_push_#{protected_branch.id}", protected_branch.push_access_levels.first.access_level
   = dropdown_tag( (protected_branch.push_access_levels.first.humanize || 'Select') ,
-                 options: { toggle_class: 'js-allowed-to-push', dropdown_class: 'dropdown-menu-selectable js-allowed-to-push-container capitalize-header',
+                 options: { toggle_class: 'js-allowed-to-push qa-allowed-to-push', dropdown_class: 'dropdown-menu-selectable js-allowed-to-push-container capitalize-header',
                  data: { field_name: "allowed_to_push_#{protected_branch.id}", access_level_id: protected_branch.push_access_levels.first.id }})
diff --git a/app/views/projects/protected_branches/shared/_branches_list.html.haml b/app/views/projects/protected_branches/shared/_branches_list.html.haml
index 300055a4207..d1ed438eb21 100644
--- a/app/views/projects/protected_branches/shared/_branches_list.html.haml
+++ b/app/views/projects/protected_branches/shared/_branches_list.html.haml
@@ -1,4 +1,4 @@
-.protected-branches-list.js-protected-branches-list
+.protected-branches-list.js-protected-branches-list.qa-protected-branches-list
   - if @protected_branches.empty?
     .panel-heading
       %h3.panel-title
diff --git a/app/views/projects/protected_branches/shared/_dropdown.html.haml b/app/views/projects/protected_branches/shared/_dropdown.html.haml
index 74435236808..b3d6068039a 100644
--- a/app/views/projects/protected_branches/shared/_dropdown.html.haml
+++ b/app/views/projects/protected_branches/shared/_dropdown.html.haml
@@ -1,8 +1,8 @@
 = f.hidden_field(:name)
 
 = dropdown_tag('Select branch or create wildcard',
-               options: { toggle_class: 'js-protected-branch-select js-filter-submit wide git-revision-dropdown-toggle',
-                          filter: true, dropdown_class: "dropdown-menu-selectable git-revision-dropdown", placeholder: "Search protected branches",
+               options: { toggle_class: 'js-protected-branch-select js-filter-submit wide git-revision-dropdown-toggle qa-protected-branch-select',
+                          filter: true, dropdown_class: "dropdown-menu-selectable git-revision-dropdown qa-protected-branch-dropdown", placeholder: "Search protected branches",
                           footer_content: true,
                           data: { show_no: true, show_any: true, show_upcoming: true,
                                   selected: params[:protected_branch_name],
diff --git a/app/views/projects/protected_branches/shared/_index.html.haml b/app/views/projects/protected_branches/shared/_index.html.haml
index 55d87c35a80..fd5c1aa342a 100644
--- a/app/views/projects/protected_branches/shared/_index.html.haml
+++ b/app/views/projects/protected_branches/shared/_index.html.haml
@@ -4,7 +4,7 @@
   .settings-header
     %h4
       Protected Branches
-    %button.btn.js-settings-toggle{ type: 'button' }
+    %button.btn.js-settings-toggle.qa-expand-protected-branches{ type: 'button' }
       = expanded ? 'Collapse' : 'Expand'
     %p
       Keep stable branches secure and force developers to use merge requests.
diff --git a/app/views/projects/protected_branches/shared/_protected_branch.html.haml b/app/views/projects/protected_branches/shared/_protected_branch.html.haml
index 10b81e42572..f5b21f0e887 100644
--- a/app/views/projects/protected_branches/shared/_protected_branch.html.haml
+++ b/app/views/projects/protected_branches/shared/_protected_branch.html.haml
@@ -2,7 +2,7 @@
 
 %tr.js-protected-branch-edit-form{ data: { url: namespace_project_protected_branch_path(@project.namespace, @project, protected_branch) } }
   %td
-    %span.ref-name= protected_branch.name
+    %span.ref-name.qa-protected-branch-name= protected_branch.name
 
     - if @project.root_ref?(protected_branch.name)
       %span.label.label-info.prepend-left-5 default
diff --git a/app/views/projects/settings/ci_cd/_autodevops_form.html.haml b/app/views/projects/settings/ci_cd/_autodevops_form.html.haml
new file mode 100644
index 00000000000..7b410101c05
--- /dev/null
+++ b/app/views/projects/settings/ci_cd/_autodevops_form.html.haml
@@ -0,0 +1,40 @@
+.row.prepend-top-default
+  .col-lg-12
+    = form_for @project, url: project_settings_ci_cd_path(@project) do |f|
+      = form_errors(@project)
+      %fieldset.builds-feature
+        .form-group
+          - message = auto_devops_warning_message(@project)
+          - ci_file_formatted = '<code>.gitlab-ci.yml</code>'.html_safe
+          - if message
+            %p.settings-message.text-center
+              = message.html_safe
+          = f.fields_for :auto_devops_attributes, @auto_devops do |form|
+            .radio
+              = form.label :enabled_true do
+                = form.radio_button :enabled, 'true'
+                %strong= s_('CICD|Enable Auto DevOps')
+                %br
+                = s_('CICD|The Auto DevOps pipeline configuration will be used when there is no %{ci_file} in the project.').html_safe % { ci_file: ci_file_formatted }
+
+            .radio
+              = form.label :enabled_false do
+                = form.radio_button :enabled, 'false'
+                %strong= s_('CICD|Disable Auto DevOps')
+                %br
+                = s_('CICD|An explicit %{ci_file} needs to be specified before you can begin using Continuous Integration and Delivery.').html_safe % { ci_file: ci_file_formatted }
+
+            .radio
+              = form.label :enabled_ do
+                = form.radio_button :enabled, ''
+                %strong= s_('CICD|Instance default (%{state})') % { state: "#{Gitlab::CurrentSettings.auto_devops_enabled? ? _('enabled') : _('disabled')}" }
+                %br
+                = s_('CICD|Follow the instance default to either have Auto DevOps enabled or disabled when there is no project specific %{ci_file}.').html_safe % { ci_file: ci_file_formatted }
+
+            = form.label :domain, class:"prepend-top-10" do
+              = _('Domain')
+            = form.text_field :domain, class: 'form-control', placeholder: 'domain.com'
+            .help-block
+              = s_('CICD|You need to specify a domain if you want to use Auto Review Apps and Auto Deploy stages.')
+
+          = f.submit 'Save changes', class: "btn btn-success prepend-top-15"
diff --git a/app/views/projects/settings/ci_cd/_form.html.haml b/app/views/projects/settings/ci_cd/_form.html.haml
index 20868f9ba5d..80c226ad273 100644
--- a/app/views/projects/settings/ci_cd/_form.html.haml
+++ b/app/views/projects/settings/ci_cd/_form.html.haml
@@ -3,44 +3,6 @@
     = form_for @project, url: project_settings_ci_cd_path(@project) do |f|
       = form_errors(@project)
       %fieldset.builds-feature
-        .form-group
-          %h5 Auto DevOps (Beta)
-          %p
-            Auto DevOps will automatically build, test, and deploy your application based on a predefined Continuous Integration and Delivery configuration.
-            = link_to 'Learn more about Auto DevOps', help_page_path('topics/autodevops/index.md')
-            - message = auto_devops_warning_message(@project)
-            - if message
-              %p.settings-message.text-center
-                = message.html_safe
-          = f.fields_for :auto_devops_attributes, @auto_devops do |form|
-            .radio
-              = form.label :enabled_true do
-                = form.radio_button :enabled, 'true'
-                %strong Enable Auto DevOps
-                %br
-                %span.descr
-                  The Auto DevOps pipeline configuration will be used when there is no <code>.gitlab-ci.yml</code> in the project.
-
-            .radio
-              = form.label :enabled_false do
-                = form.radio_button :enabled, 'false'
-                %strong Disable Auto DevOps
-                %br
-                %span.descr
-                  An explicit <code>.gitlab-ci.yml</code> needs to be specified before you can begin using Continuous Integration and Delivery.
-
-            .radio
-              = form.label :enabled_ do
-                = form.radio_button :enabled, ''
-                %strong Instance default (#{Gitlab::CurrentSettings.auto_devops_enabled? ? 'enabled' : 'disabled'})
-                %br
-                %span.descr
-                  Follow the instance default to either have Auto DevOps enabled or disabled when there is no project specific <code>.gitlab-ci.yml</code>.
-            %p
-              You need to specify a domain if you want to use Auto Review Apps and Auto Deploy stages.
-            = form.text_field :domain, class: 'form-control', placeholder: 'domain.com'
-
-        %hr
         .form-group.append-bottom-default.js-secret-runner-token
           = f.label :runners_token, "Runner token", class: 'label-light'
           .form-control.js-secret-value-placeholder
diff --git a/app/views/projects/settings/ci_cd/show.html.haml b/app/views/projects/settings/ci_cd/show.html.haml
index 09268c9943b..5f596a019f7 100644
--- a/app/views/projects/settings/ci_cd/show.html.haml
+++ b/app/views/projects/settings/ci_cd/show.html.haml
@@ -12,10 +12,22 @@
     %button.btn.js-settings-toggle{ type: 'button' }
       = expanded ? 'Collapse' : 'Expand'
     %p
-      Update your CI/CD configuration, like job timeout or Auto DevOps.
+      Access your runner token, customize your pipeline configuration, and view your pipeline status and coverage report.
   .settings-content
     = render 'form'
 
+%section.settings#autodevops-settings.no-animate{ class: ('expanded' if expanded) }
+  .settings-header
+    %h4
+      = s_('CICD|Auto DevOps (Beta)')
+    %button.btn.btn-default.js-settings-toggle{ type: 'button' }
+      = expanded ? _('Collapse') : _('Expand')
+    %p
+      = s_('CICD|Auto DevOps will automatically build, test, and deploy your application based on a predefined Continuous Integration and Delivery configuration.')
+      = link_to s_('CICD|Learn more about Auto DevOps'), help_page_path('topics/autodevops/index.md')
+  .settings-content
+    = render 'autodevops_form'
+
 %section.settings.no-animate{ class: ('expanded' if expanded) }
   .settings-header
     %h4
diff --git a/app/views/shared/_auto_devops_callout.html.haml b/app/views/shared/_auto_devops_callout.html.haml
index e9ac192f5f7..d3fa324e460 100644
--- a/app/views/shared/_auto_devops_callout.html.haml
+++ b/app/views/shared/_auto_devops_callout.html.haml
@@ -9,7 +9,7 @@
       - link = link_to(s_('AutoDevOps|Auto DevOps documentation'), help_page_path('topics/autodevops/index.md'), target: '_blank', rel: 'noopener noreferrer')
       = s_('AutoDevOps|Learn more in the %{link_to_documentation}').html_safe % { link_to_documentation: link }
     .banner-buttons
-      = link_to s_('AutoDevOps|Enable in settings'), project_settings_ci_cd_path(@project, anchor: 'js-general-pipeline-settings'), class: 'btn js-close-callout'
+      = link_to s_('AutoDevOps|Enable in settings'), project_settings_ci_cd_path(@project, anchor: 'autodevops-settings'), class: 'btn js-close-callout'
 
   %button.btn-transparent.banner-close.close.js-close-callout{ type: 'button',
   'aria-label' => 'Dismiss Auto DevOps box' }
diff --git a/app/views/shared/_ref_switcher.html.haml b/app/views/shared/_ref_switcher.html.haml
index 4c8c92d722a..f1c39b9e923 100644
--- a/app/views/shared/_ref_switcher.html.haml
+++ b/app/views/shared/_ref_switcher.html.haml
@@ -8,8 +8,8 @@
   - @options && @options.each do |key, value|
     = hidden_field_tag key, value, id: nil
   .dropdown
-    = dropdown_toggle dropdown_toggle_text, { toggle: "dropdown", selected: dropdown_toggle_text, ref: @ref, refs_url: refs_project_path(@project, sort: 'updated_desc'), field_name: 'ref', submit_form_on_click: true, visit: true }, { toggle_class: "js-project-refs-dropdown" }
-    .dropdown-menu.dropdown-menu-selectable.git-revision-dropdown.dropdown-menu-paging{ class: ("dropdown-menu-align-right" if local_assigns[:align_right]) }
+    = dropdown_toggle dropdown_toggle_text, { toggle: "dropdown", selected: dropdown_toggle_text, ref: @ref, refs_url: refs_project_path(@project, sort: 'updated_desc'), field_name: 'ref', submit_form_on_click: true, visit: true }, { toggle_class: "js-project-refs-dropdown qa-branches-select" }
+    .dropdown-menu.dropdown-menu-selectable.git-revision-dropdown.dropdown-menu-paging.qa-branches-dropdown{ class: ("dropdown-menu-align-right" if local_assigns[:align_right]) }
       .dropdown-page-one
         = dropdown_title _("Switch branch/tag")
         = dropdown_filter _("Search branches and tags")
diff --git a/app/views/shared/boards/components/sidebar/_labels.html.haml b/app/views/shared/boards/components/sidebar/_labels.html.haml
index 87e6b52f46e..1c73534c642 100644
--- a/app/views/shared/boards/components/sidebar/_labels.html.haml
+++ b/app/views/shared/boards/components/sidebar/_labels.html.haml
@@ -4,7 +4,7 @@
     - if can_admin_issue?
       = icon("spinner spin", class: "block-loading")
       = link_to "Edit", "#", class: "js-sidebar-dropdown-toggle edit-link pull-right"
-  .value.issuable-show-labels
+  .value.issuable-show-labels.dont-hide
     %span.no-value{ "v-if" => "issue.labels && issue.labels.length === 0" }
       None
     %a{ href: "#",
diff --git a/app/views/shared/issuable/_sidebar.html.haml b/app/views/shared/issuable/_sidebar.html.haml
index 975b9cb4729..093033775a9 100644
--- a/app/views/shared/issuable/_sidebar.html.haml
+++ b/app/views/shared/issuable/_sidebar.html.haml
@@ -7,7 +7,7 @@
       - if current_user
         %span.issuable-header-text.hide-collapsed.pull-left
           = _('Todo')
-      %a.gutter-toggle.pull-right.js-sidebar-toggle{ role: "button", href: "#", "aria-label" => "Toggle sidebar" }
+      %a.gutter-toggle.pull-right.js-sidebar-toggle.has-tooltip{ role: "button", href: "#", "aria-label" => "Toggle sidebar", title: sidebar_gutter_tooltip_text, data: { container: 'body', placement: 'left' } }
         = sidebar_gutter_toggle_icon
       - if current_user
         = render "shared/issuable/sidebar_todo", todo: todo, issuable: issuable
@@ -19,12 +19,11 @@
       .block.assignee
         = render "shared/issuable/sidebar_assignees", issuable: issuable, can_edit_issuable: can_edit_issuable, signed_in: current_user.present?
       .block.milestone
-        .sidebar-collapsed-icon
+        .sidebar-collapsed-icon.has-tooltip{ title: milestone_tooltip_title(issuable.milestone), data: { container: 'body', html: 1, placement: 'left' } }
           = icon('clock-o', 'aria-hidden': 'true')
           %span.milestone-title
             - if issuable.milestone
-              %span.has-tooltip{ title: "#{issuable.milestone.title}<br>#{milestone_tooltip_title(issuable.milestone)}", data: { container: 'body', html: 1, placement: 'left' } }
-                = issuable.milestone.title
+              = issuable.milestone.title
             - else
               = _('None')
         .title.hide-collapsed
@@ -34,7 +33,7 @@
             = link_to _('Edit'), '#', class: 'js-sidebar-dropdown-toggle edit-link pull-right'
         .value.hide-collapsed
           - if issuable.milestone
-            = link_to issuable.milestone.title, milestone_path(issuable.milestone), class: "bold has-tooltip", title: milestone_tooltip_title(issuable.milestone), data: { container: "body", html: 1 }
+            = link_to issuable.milestone.title, milestone_path(issuable.milestone), class: "bold has-tooltip", title: milestone_tooltip_due_date(issuable.milestone), data: { container: "body", html: 1 }
           - else
             %span.no-value
               = _('None')
@@ -50,7 +49,7 @@
             = icon('spinner spin', 'aria-hidden': 'true')
       - if issuable.has_attribute?(:due_date)
         .block.due_date
-          .sidebar-collapsed-icon
+          .sidebar-collapsed-icon.has-tooltip{ data: { placement: 'left', container: 'body', html: 1 }, title: sidebar_due_date_tooltip_label(issuable) }
             = icon('calendar', 'aria-hidden': 'true')
             %span.js-due-date-sidebar-value
               = issuable.due_date.try(:to_s, :medium) || 'None'
@@ -96,7 +95,7 @@
             = icon('spinner spin', class: 'hidden block-loading', 'aria-hidden': 'true')
             - if can_edit_issuable
               = link_to _('Edit'), '#', class: 'js-sidebar-dropdown-toggle edit-link pull-right'
-          .value.issuable-show-labels.hide-collapsed{ class: ("has-labels" if selected_labels.any?) }
+          .value.issuable-show-labels.dont-hide.hide-collapsed{ class: ("has-labels" if selected_labels.any?) }
             - if selected_labels.any?
               - selected_labels.each do |label|
                 = link_to_label(label, subject: issuable.project, type: issuable.to_ability_name)
diff --git a/app/views/shared/issuable/_sidebar_assignees.html.haml b/app/views/shared/issuable/_sidebar_assignees.html.haml
index 304df38a096..21006a76b28 100644
--- a/app/views/shared/issuable/_sidebar_assignees.html.haml
+++ b/app/views/shared/issuable/_sidebar_assignees.html.haml
@@ -4,7 +4,7 @@
       = _('Assignee')
       = icon('spinner spin')
 - else
-  .sidebar-collapsed-icon.sidebar-collapsed-user{ data: { toggle: "tooltip", placement: "left", container: "body" }, title: (issuable.assignee.name if issuable.assignee) }
+  .sidebar-collapsed-icon.sidebar-collapsed-user{ data: { toggle: "tooltip", placement: "left", container: "body" }, title: sidebar_assignee_tooltip_label(issuable) }
     - if issuable.assignee
       = link_to_member(@project, issuable.assignee, size: 24)
     - else
diff --git a/app/views/shared/issuable/_sidebar_todo.html.haml b/app/views/shared/issuable/_sidebar_todo.html.haml
index b77e104c072..74327fb1ba8 100644
--- a/app/views/shared/issuable/_sidebar_todo.html.haml
+++ b/app/views/shared/issuable/_sidebar_todo.html.haml
@@ -1,11 +1,11 @@
 - is_collapsed = local_assigns.fetch(:is_collapsed, false)
-- mark_content = is_collapsed ? icon('check-square', class: 'todo-undone') : _('Mark done')
+- mark_content = is_collapsed ? icon('check-square', class: 'todo-undone') : _('Mark todo as done')
 - todo_content = is_collapsed ? icon('plus-square') : _('Add todo')
 
 %button.issuable-todo-btn.js-issuable-todo{ type: 'button',
   class: (is_collapsed ? 'btn-blank sidebar-collapsed-icon dont-change-state has-tooltip' : 'btn btn-default issuable-header-btn pull-right'),
-  title: (todo.nil? ? _('Add todo') : _('Mark done')),
-  'aria-label' => (todo.nil? ? _('Add todo') : _('Mark done')),
+  title: (todo.nil? ? _('Add todo') : _('Mark todo as done')),
+  'aria-label' => (todo.nil? ? _('Add todo') : _('Mark todo as done')),
   data: issuable_todo_button_data(issuable, todo, is_collapsed) }
   %span.issuable-todo-inner.js-issuable-todo-inner<
     - if todo
diff --git a/app/views/shared/issuable/form/_merge_request_assignee.html.haml b/app/views/shared/issuable/form/_merge_request_assignee.html.haml
index bf8613b0f0d..d7740eddcca 100644
--- a/app/views/shared/issuable/form/_merge_request_assignee.html.haml
+++ b/app/views/shared/issuable/form/_merge_request_assignee.html.haml
@@ -1,6 +1,6 @@
 - merge_request = issuable
 .block.assignee
-  .sidebar-collapsed-icon.sidebar-collapsed-user{ data: { toggle: "tooltip", placement: "left", container: "body" }, title: (merge_request.assignee.name if merge_request.assignee) }
+  .sidebar-collapsed-icon.sidebar-collapsed-user{ data: { toggle: "tooltip", placement: "left", container: "body" }, title: sidebar_assignee_tooltip_label(issuable) }
     - if merge_request.assignee
       = link_to_member(@project, merge_request.assignee, size: 24)
     - else
diff --git a/app/views/shared/milestones/_sidebar.html.haml b/app/views/shared/milestones/_sidebar.html.haml
index ee134480705..8e9a1b56bb8 100644
--- a/app/views/shared/milestones/_sidebar.html.haml
+++ b/app/views/shared/milestones/_sidebar.html.haml
@@ -4,12 +4,8 @@
 %aside.right-sidebar.js-right-sidebar{ data: { "offset-top" => affix_offset, "spy" => "affix", "always-show-toggle" => true }, class: sidebar_gutter_collapsed_class, 'aria-live' => 'polite' }
   .issuable-sidebar.milestone-sidebar
     .block.milestone-progress.issuable-sidebar-header
-      %a.gutter-toggle.pull-right.js-sidebar-toggle{ role: "button", href: "#", "aria-label" => "Toggle sidebar" }
+      %a.gutter-toggle.pull-right.js-sidebar-toggle.has-tooltip{ role: "button", href: "#", "aria-label" => "Toggle sidebar", title: sidebar_gutter_tooltip_text, data: { container: 'body', placement: 'left' } }
         = sidebar_gutter_toggle_icon
-
-      .sidebar-collapsed-icon
-        %span== #{milestone.percent_complete(current_user)}%
-        = milestone_progress_bar(milestone)
       .title.hide-collapsed
         %strong.bold== #{milestone.percent_complete(current_user)}%
         %span.hide-collapsed
@@ -17,6 +13,11 @@
       .value.hide-collapsed
         = milestone_progress_bar(milestone)
 
+    .block.milestone-progress.hide-expanded
+      .sidebar-collapsed-icon.has-tooltip{ title: milestone_progress_tooltip_text(milestone), data: { container: 'body', html: 1, placement: 'left' } }
+        %span== #{milestone.percent_complete(current_user)}%
+        = milestone_progress_bar(milestone)
+
     .block.start_date.hide-collapsed
       .title
         Start date
@@ -35,19 +36,25 @@
         %span.collapsed-milestone-date
           - if milestone.start_date && milestone.due_date
             - if milestone.start_date.year == milestone.due_date.year
-              .milestone-date= milestone.start_date.strftime('%b %-d')
+              .milestone-date.has-tooltip{ title: milestone_time_for(milestone.start_date, :start), data: { container: 'body', html: 1, placement: 'left' } }
+                = milestone.start_date.strftime('%b %-d')
             - else
-              .milestone-date= milestone.start_date.strftime('%b %-d %Y')
+              .milestone-date.has-tooltip{ title: milestone_time_for(milestone.start_date, :start), data: { container: 'body', html: 1, placement: 'left' } }
+                = milestone.start_date.strftime('%b %-d %Y')
             .date-separator -
-            .due_date= milestone.due_date.strftime('%b %-d %Y')
+            .due_date.has-tooltip{ title: milestone_time_for(milestone.due_date, :end), data: { container: 'body', html: 1, placement: 'left' } }
+              = milestone.due_date.strftime('%b %-d %Y')
           - elsif milestone.start_date
             From
-            .milestone-date= milestone.start_date.strftime('%b %-d %Y')
+            .milestone-date.has-tooltip{ title: milestone_time_for(milestone.start_date, :start), data: { container: 'body', html: 1, placement: 'left' } }
+              = milestone.start_date.strftime('%b %-d %Y')
           - elsif milestone.due_date
             Until
-            .milestone-date= milestone.due_date.strftime('%b %-d %Y')
+            .milestone-date.has-tooltip{ title: milestone_time_for(milestone.due_date, :end), data: { container: 'body', html: 1, placement: 'left' } }
+              = milestone.due_date.strftime('%b %-d %Y')
           - else
-            None
+            .has-tooltip{ title: milestone_time_for(milestone.start_date, :start), data: { container: 'body', html: 1, placement: 'left' } }
+              None
       .title.hide-collapsed
         Due date
         - if @project && can?(current_user, :admin_milestone, @project)
@@ -58,14 +65,14 @@
             %span.bold= milestone.due_date.to_s(:medium)
           - else
             %span.no-value No due date
-        - remaining_days = milestone_remaining_days(milestone)
+        - remaining_days = remaining_days_in_words(milestone)
         - if remaining_days.present?
           = surround '(', ')' do
             %span.remaining-days= remaining_days
 
     - if !project || can?(current_user, :read_issue, project)
       .block.issues
-        .sidebar-collapsed-icon
+        .sidebar-collapsed-icon.has-tooltip{ title: milestone_issues_tooltip_text(milestone), data: { container: 'body', html: 1, placement: 'left' } }
           %strong
             = custom_icon('issues')
           %span= milestone.issues_visible_to_user(current_user).count
@@ -93,7 +100,7 @@
           = icon('spinner spin')
 
     .block.merge-requests
-      .sidebar-collapsed-icon
+      .sidebar-collapsed-icon.has-tooltip{ title: milestone_merge_requests_tooltip_text(milestone), data: { container: 'body', html: 1, placement: 'left' } }
         %strong
           = custom_icon('mr_bold')
         %span= milestone.merge_requests.count
diff --git a/app/workers/all_queues.yml b/app/workers/all_queues.yml
index 9a11cdb121e..9aea3bad27b 100644
--- a/app/workers/all_queues.yml
+++ b/app/workers/all_queues.yml
@@ -18,6 +18,7 @@
 - cronjob:stuck_import_jobs
 - cronjob:stuck_merge_jobs
 - cronjob:trending_projects
+- cronjob:issue_due_scheduler
 
 - gcp_cluster:cluster_install_app
 - gcp_cluster:cluster_provision
@@ -39,6 +40,8 @@
 - github_importer:github_import_stage_import_pull_requests
 - github_importer:github_import_stage_import_repository
 
+- mail_scheduler:mail_scheduler_issue_due
+
 - object_storage_upload
 - object_storage:object_storage_background_move
 - object_storage:object_storage_migrate_uploads
diff --git a/app/workers/concerns/mail_scheduler_queue.rb b/app/workers/concerns/mail_scheduler_queue.rb
new file mode 100644
index 00000000000..9df55ad9522
--- /dev/null
+++ b/app/workers/concerns/mail_scheduler_queue.rb
@@ -0,0 +1,7 @@
+module MailSchedulerQueue
+  extend ActiveSupport::Concern
+
+  included do
+    queue_namespace :mail_scheduler
+  end
+end
diff --git a/app/workers/issue_due_scheduler_worker.rb b/app/workers/issue_due_scheduler_worker.rb
new file mode 100644
index 00000000000..16ab5d069e0
--- /dev/null
+++ b/app/workers/issue_due_scheduler_worker.rb
@@ -0,0 +1,10 @@
+class IssueDueSchedulerWorker
+  include ApplicationWorker
+  include CronjobQueue
+
+  def perform
+    project_ids = Issue.opened.due_tomorrow.group(:project_id).pluck(:project_id).map { |id| [id] }
+
+    MailScheduler::IssueDueWorker.bulk_perform_async(project_ids)
+  end
+end
diff --git a/app/workers/mail_scheduler/issue_due_worker.rb b/app/workers/mail_scheduler/issue_due_worker.rb
new file mode 100644
index 00000000000..b06079d68ca
--- /dev/null
+++ b/app/workers/mail_scheduler/issue_due_worker.rb
@@ -0,0 +1,14 @@
+module MailScheduler
+  class IssueDueWorker
+    include ApplicationWorker
+    include MailSchedulerQueue
+
+    def perform(project_id)
+      notification_service = NotificationService.new
+
+      Issue.opened.due_tomorrow.in_projects(project_id).preload(:project).find_each do |issue|
+        notification_service.issue_due(issue)
+      end
+    end
+  end
+end
diff --git a/app/workers/post_receive.rb b/app/workers/post_receive.rb
index 3909dbf7d7f..f88b3fdbfb1 100644
--- a/app/workers/post_receive.rb
+++ b/app/workers/post_receive.rb
@@ -33,7 +33,7 @@ class PostReceive
 
       unless @user
         log("Triggered hook for non-existing user \"#{post_received.identifier}\"")
-        return false
+        return false # rubocop:disable Cop/AvoidReturnFromBlocks
       end
 
       if Gitlab::Git.tag_ref?(ref)
diff --git a/app/workers/stuck_ci_jobs_worker.rb b/app/workers/stuck_ci_jobs_worker.rb
index fb26fa4c515..7ebf69bdc39 100644
--- a/app/workers/stuck_ci_jobs_worker.rb
+++ b/app/workers/stuck_ci_jobs_worker.rb
@@ -38,7 +38,7 @@ class StuckCiJobsWorker
 
   def drop_stuck(status, timeout)
     search(status, timeout) do |build|
-      return unless build.stuck?
+      break unless build.stuck?
 
       drop_build :stuck, build, status, timeout
     end