Split complex method EventsHelper#event_feed_url.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/helpers/events_helper.rb

@@ -108,6 +108,11 @@ module EventsHelper
         end
       end
     elsif event.push?
+      push_event_feed_url(event)
+    end
+  end
+
+  def push_event_feed_url(event)
     if event.push_with_commits? && event.md_ref?
       if event.commits_count > 1
         namespace_project_compare_url(event.project.namespace, event.project,
@@ -122,7 +127,6 @@ module EventsHelper
                                     event.ref_name)
     end
   end
-  end
 
   def event_feed_summary(event)
     if event.issue?