Refactor Merge Requests tab into a custom partial

app/views/groups/milestones/show.html.haml

@@ -76,15 +76,4 @@
     = render 'shared/milestones/merge_requests_tab', unassigned: @milestone.opened_merge_requests.unassigned, assigned: @milestone.opened_merge_requests.assigned, closed: @milestone.merge_requests.closed, merged: @milestone.merge_requests.merged
 
   .tab-pane#tab-participants
-    .gray-content-block.middle-block
-      .oneline
-        All participants to this milestone
-
-    %ul.bordered-list
-      - @milestone.participants.each do |user|
-        %li
-          = link_to user, title: user.name, class: "darken" do
-            = image_tag avatar_icon(user, 32), class: "avatar s32"
-            %strong= truncate(user.name, lenght: 40)
-            %br
-            %small.cgray= user.username
+    = render 'shared/milestones/participants_tab', users: @milestone.participants

app/views/projects/milestones/show.html.haml

@@ -98,15 +98,7 @@
   .tab-pane#tab-merge-requests
     = render 'shared/milestones/merge_requests_tab', unassigned: @merge_requests.opened.unassigned, assigned: @merge_requests.opened.assigned, closed: @merge_requests.closed, merged: @merge_requests.merged
   .tab-pane#tab-participants
-    %ul.bordered-list
-      - @users.each do |user|
-        %li
-          = link_to user, title: user.name, class: "darken" do
-            = image_tag avatar_icon(user, 32), class: "avatar s32"
-            %strong= truncate(user.name, lenght: 40)
-            %br
-            %small.cgray= user.username
-
+    = render 'shared/milestones/participants_tab', users: @users
   .tab-pane#tab-labels
     %ul.bordered-list.manage-labels-list
       - @labels.each do |label|

app/views/shared/milestones/_participants_tab.html.haml

+%ul.bordered-list
+  - users.each do |user|
+    %li
+      = link_to user, title: user.name, class: "darken" do
+        = image_tag avatar_icon(user, 32), class: "avatar s32"
+        %strong= truncate(user.name, lenght: 40)
+        %br
+        %small.cgray= user.username