Fix RTL in merge request branch names

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

@@ -2,9 +2,13 @@
   New merge request
 %p.slead
   From
-  %strong.label-branch #{@merge_request.source_project_namespace}:#{@merge_request.source_branch}
+  %strong.label-branch
+    %span{ dir: :auto }= "#{@merge_request.source_project_namespace}:"
+    %span{ dir: :auto }= "#{@merge_request.source_branch}"
   %span into
-  %strong.label-branch #{@merge_request.target_project_namespace}:#{@merge_request.target_branch}
+  %strong.label-branch
+    %span{ dir: :auto }= "#{@merge_request.target_project_namespace}:"
+    %span{ dir: :auto }= "#{@merge_request.target_branch}"
 
   %span.pull-right
     = link_to 'Change branches', new_project_merge_request_path(@project)