Event entity created

Observe issue, merge request, note creation - create event
register push event

app/workers/post_receive.rb

@@ -5,6 +5,7 @@ class PostReceive
     project = Project.find_by_path(reponame)
     return false if project.nil?
 
+    project.observe_push(oldrev, newrev, ref)
     project.execute_web_hooks(oldrev, newrev, ref)
   end
 end