CE port for Group bulk edit merge requests

Add bulk update sidebar to merge requests template
Add js to toggle sidebar
Fix bulk update button in issues template
Add specs for merge requests in bulk update service

3 files changed, 18 insertions, 14 deletions

diff --git a/doc/user/group/bulk_editing/index.md b/doc/user/group/bulk_editing/index.md
index 117a46da0ea..5b5f75c2dd9 100644
--- a/doc/user/group/bulk_editing/index.md
+++ b/doc/user/group/bulk_editing/index.md
@@ -1,22 +1,26 @@
-# Bulk editing issue milestones **(PREMIUM)**
+# Bulk editing issue and merge request milestones **(PREMIUM)**
 
-> [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/7249) in
-[GitLab Ultimate](https://about.gitlab.com/pricing/) 12.1.
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/7249) for issues in
+  [GitLab Premium](https://about.gitlab.com/pricing/) 12.1.
+> - [Introduced](https://gitlab.com/gitlab-org/gitlab-ee/issues/12719) for merge
+  requests in GitLab [GitLab Premium](https://about.gitlab.com/pricing/) 12.2.
 
-NOTE: **Note:**
-A permission level of `Reporter` or higher is required in order to manage issues.
+> NOTE: **Note:**
+>
+> - A permission level of `Reporter` or higher is required in order to manage issues.
+> - A permission level of `Developer` or higher is required in order to manage merge requests.
 
-Milestones can be updated simultaneously across multiple issues by using the bulk editing feature.
+Milestones can be updated simultaneously across multiple issues or merge requests by using the bulk editing feature.
 
 ![Bulk editing](img/bulk-editing.png)
 
-To bulk update group issue milestones:
+To bulk update group issue or merge request milestones:
 
-1. Navigate to the issues list.
-1. Click **Edit issues**.
+1. Navigate to the issues or merge requests list.
+1. Click the **Edit issues** or **Edit merge requests** button.
     - This will open a sidebar on the right-hand side of your screen where an editable field
   for milestones will be displayed.
-    - Checkboxes will also appear beside each issue.
+    - Checkboxes will also appear beside each issue or merge request.
 1. Check the checkbox beside each issue to be edited.
 1. Select the desired milestone from the sidebar.
 1. Click **Update all**.
diff --git a/doc/user/group/index.md b/doc/user/group/index.md
index 7597105f36f..14c831fe671 100644
--- a/doc/user/group/index.md
+++ b/doc/user/group/index.md
@@ -78,9 +78,9 @@ Issues and merge requests are part of projects. For a given group, you can view
 [issues](../project/issues/index.md#issues-list) and [merge requests](../project/merge_requests/index.md#merge-requests-per-group) across all projects in that group,
 together in a single list view.
 
-### Bulk editing issues
+### Bulk editing issues and merge requests
 
-For details, see [bulk editing issues](../group/bulk_editing/index.md).
+For details, see [bulk editing issues and merge requests](../group/bulk_editing/index.md).
 
 ## Create a new group
 
diff --git a/doc/user/project/bulk_editing.md b/doc/user/project/bulk_editing.md
index 1783f81df3a..f4733620640 100644
--- a/doc/user/project/bulk_editing.md
+++ b/doc/user/project/bulk_editing.md
@@ -13,8 +13,8 @@ by using the bulk editing feature.
 ![Bulk editing](img/bulk-editing.png)
 
 NOTE: **Note:**
-Bulk editing of merge requests is only available at the project level.
-For more details, see [bulk editing group issues](../group/bulk_editing/index.md).
+Bulk editing issues and merge requests is also available at the group level.
+For more details, see [bulk editing group issues and merge requests](../group/bulk_editing/index.md).
 
 To update multiple project issues or merge requests at the same time: