Revert "Revert this until we do notifications"

This reverts commit c5e0305d.

app/services/notification_service.rb

@@ -640,6 +640,6 @@ class NotificationService
   # Build event key to search on custom notification level
   # Check NotificationSetting::EMAIL_EVENTS
   def build_custom_key(action, object)
-    "#{action}_#{object.class.name.underscore}".to_sym
+    "#{action}_#{object.class.model_name.name.underscore}".to_sym
   end
 end