Merge branch 'gokmengoksel/gitlab-ce-koding' into 'master'

Koding Integration

## What does this MR do?

Will provide Koding integration with GitLab services. Forked from !4914.

## Are there points in the code the reviewer needs to double check?
I've introduced new layouts which might not be necessary, first time contributor. 

## Why was this MR needed?
We're planning to ship Koding with GitLab.

## What are the relevant issue numbers?
#12759 #14698 

## Screenshots (if relevant)

### Screencasts

http://recordit.co/BDMbhwgxPD
http://recordit.co/By0qiz1ClC

### Enable Koding in Application Settings

![image](/uploads/73a69421105c03aa2b0b47e2617d3fbc/image.png)

### Koding Dashboard
![image](/uploads/6c7dda34792280c0e4791e36af4eba11/image.png)

### Set up Koding Stack
1 - ![image](/uploads/d5c2b93f8e61b5cbffdb06f0267d485f/image.png)
2 - ![image](/uploads/44d9a9b574b8ac0c5eb553fb9653d5da/image.png)

### Run on Koding on Project Page

![image](/uploads/7d2b46221009074ffff75d66d5a1a555/image.png)

### Run in IDE on Merge Requests
![image](/uploads/65eed90c34c34b5fe7ad29ef9c717640/image.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5909

3 files changed, 13 insertions, 1 deletions

diff --git a/app/views/projects/buttons/_koding.html.haml b/app/views/projects/buttons/_koding.html.haml
new file mode 100644
index 00000000000..fdc80d44253
--- /dev/null
+++ b/app/views/projects/buttons/_koding.html.haml
@@ -0,0 +1,7 @@
+- if koding_enabled? && current_user && can_push_branch?(@project, @project.default_branch)
+  - if @repository.koding_yml
+    = link_to koding_project_url(@project), class: 'btn', target: '_blank' do
+      Run in IDE (Koding)
+  - else
+    = link_to add_koding_stack_path(@project), class: 'btn' do
+      Set Up Koding
diff --git a/app/views/projects/merge_requests/_show.html.haml b/app/views/projects/merge_requests/_show.html.haml
index f8025fc1dbe..9d8b4cc56be 100644
--- a/app/views/projects/merge_requests/_show.html.haml
+++ b/app/views/projects/merge_requests/_show.html.haml
@@ -16,6 +16,9 @@
       - if @merge_request.open?
         .pull-right
           - if @merge_request.source_branch_exists?
+            - if koding_enabled? && @repository.koding_yml
+              = link_to koding_project_url(@merge_request.source_project, @merge_request.source_branch, @merge_request.commits.first.short_id), class: "btn inline btn-grouped btn-sm", target: '_blank' do
+                Run in IDE (Koding)
             = link_to "#modal_merge_info", class: "btn inline btn-grouped btn-sm", "data-toggle" => "modal" do
               Check out branch
 
diff --git a/app/views/projects/show.html.haml b/app/views/projects/show.html.haml
index a666d07e9eb..340e159c874 100644
--- a/app/views/projects/show.html.haml
+++ b/app/views/projects/show.html.haml
@@ -64,10 +64,12 @@
         %li.missing
           = link_to add_special_file_path(@project, file_name: '.gitlab-ci.yml') do
             Set Up CI
+
     %li.project-repo-buttons-right
       .project-repo-buttons.project-right-buttons
         - if current_user
           = render 'shared/members/access_request_buttons', source: @project
+          = render "projects/buttons/koding"
 
         .btn-group.project-repo-btn-group
           = render "projects/buttons/download"
@@ -86,4 +88,4 @@
         Archived project! Repository is read-only
 
   %div{class: "project-show-#{default_project_view}"}
-    = render default_project_view
\ No newline at end of file
+    = render default_project_view