Merge branch 'move-mr-builds-tab' into 'master'

Move MR Builds tab next to Commits

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/4132

@dzaporozhets We've got two people who feel strongly about this now, @sytses filed an issue for it :)

![Screen_Shot_2015-12-16_at_22.19.35](/uploads/37e705610ba54e386928d7972398c247/Screen_Shot_2015-12-16_at_22.19.35.png)


See merge request !2128

app/views/projects/merge_requests/_new_submit.html.haml

@@ -23,15 +23,15 @@
       = link_to url_for(params), data: {target: 'div#commits', action: 'commits', toggle: 'tab'} do
         Commits
         %span.badge= @commits.size
-    %li.diffs-tab.active
-      = link_to url_for(params), data: {target: 'div#diffs', action: 'diffs', toggle: 'tab'} do
-        Changes
-        %span.badge= @diffs.size
     - if @ci_commit
       %li.builds-tab.active
         = link_to url_for(params), data: {target: 'div#builds', action: 'builds', toggle: 'tab'} do
           Builds
           %span.badge= @statuses.size
+    %li.diffs-tab.active
+      = link_to url_for(params), data: {target: 'div#diffs', action: 'diffs', toggle: 'tab'} do
+        Changes
+        %span.badge= @diffs.size
 
   .tab-content
     #commits.commits.tab-pane

app/views/projects/merge_requests/_show.html.haml

@@ -53,25 +53,25 @@
               = link_to commits_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: 'div#commits', action: 'commits', toggle: 'tab'} do
                 Commits
                 %span.badge= @commits.size
-            %li.diffs-tab
-              = link_to diffs_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: 'div#diffs', action: 'diffs', toggle: 'tab'} do
-                Changes
-                %span.badge= @merge_request.diffs.size
             - if @ci_commit
               %li.builds-tab
                 = link_to builds_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: '#builds', action: 'builds', toggle: 'tab'} do
                   Builds
                   %span.badge= @statuses.size
+            %li.diffs-tab
+              = link_to diffs_namespace_project_merge_request_path(@project.namespace, @project, @merge_request), data: {target: 'div#diffs', action: 'diffs', toggle: 'tab'} do
+                Changes
+                %span.badge= @merge_request.diffs.size
 
         .tab-content
           #notes.notes.tab-pane.voting_notes
             = render "projects/merge_requests/discussion"
           #commits.commits.tab-pane
             - # This tab is always loaded via AJAX
-          #diffs.diffs.tab-pane
-            - # This tab is always loaded via AJAX
           #builds.builds.tab-pane
             - # This tab is always loaded via AJAX
+          #diffs.diffs.tab-pane
+            - # This tab is always loaded via AJAX
 
         .mr-loading-status
           = spinner