Get contributed projects only if push event exists

app/models/user.rb

@@ -610,6 +610,7 @@ class User < ActiveRecord::Base
 
   def contributed_projects_ids
     Event.where(author_id: self).
+      code_push.
       reorder(project_id: :desc).
       select('DISTINCT(project_id)').
       map(&:project_id)

app/views/users/calendar.html.haml

-%h4 Calendar
+%h4 Commits calendar
 #cal-heatmap.calendar
   :javascript
     new calendar(