Combining recent change to have username in header with my MR.

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

@@ -26,12 +26,16 @@
         Issue ##{@issue.iid}
       %span.creator
         by
+        .editor-details
           .editor-details
             %strong
               =link_to_member(@project, @issue.author, size: 24, mobile_classes: "hidden-xs")
-            =link_to_member(@project, @issue.author, size: 24,
+            %span.hidden-xs
+              = '@' + @issue.author.username
+            %strong
+              =link_to_member(@project, @issue.author, size: 24, mobile_classes: "hidden-sm hidden-md hidden-lg",
                 by_username: true, avatar: false)
-          = time_ago_with_tooltip(@issue.created_at, placement: 'bottom', html_class: 'issue_created_ago')
+            = time_ago_with_tooltip(@issue.created_at)
 
     .pull-right.issue-btn-group
       - if can?(current_user, :create_issue, @project)

app/views/projects/merge_requests/show/_mr_title.html.haml

@@ -14,7 +14,10 @@
       .editor-details
         %strong
           =link_to_member(@project, @merge_request.author, size: 24, mobile_classes: "hidden-xs")
-          =link_to_member(@project, @merge_request.author, size: 24,
+        %span.hidden-xs
+          = '@' + @merge_request.author.username
+        %strong
+          =link_to_member(@project, @merge_request.author, size: 24, mobile_classes: "hidden-sm hidden-md hidden-lg",
             by_username: true, avatar: false)
         = time_ago_with_tooltip(@merge_request.created_at)