Source repo is now clickable.

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

@@ -31,7 +31,12 @@
   %span.prepend-left-20
     %span From
     - if @merge_request.for_fork?
-      %strong.label-branch #{@merge_request.source_project_namespace}:#{@merge_request.source_branch}
+      %strong.label-branch<
+        - if @merge_request.source_project
+          = link_to @merge_request.source_project_namespace, project_path(@merge_request.source_project)
+        - else
+          \ #{@merge_request.source_project_namespace}
+        \:#{@merge_request.source_branch}
       %span into
       %strong.label-branch #{@merge_request.target_project_namespace}:#{@merge_request.target_branch}
     - else