Enhance reuse in MR

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

@@ -14,11 +14,10 @@
 
 = render 'projects/last_push'
 
-- if @project.merge_requests.exists?
-  %div{ class: container_class }
-    - if show_auto_devops_callout?(@project)
-      = render 'shared/auto_devops_callout'
-
+%div{ class: container_class }
+  - if show_auto_devops_callout?(@project)
+    = render 'shared/auto_devops_callout'
+  - if @project.merge_requests.exists?
     .top-area
       = render 'shared/issuable/nav', type: :merge_requests
       .nav-controls
@@ -31,5 +30,5 @@
 
     .merge-requests-holder
       = render 'merge_requests'
-- else
-  = render 'shared/empty_states/merge_requests', button_path: new_merge_request_path
+  - else
+    = render 'shared/empty_states/merge_requests', button_path: new_merge_request_path