Issue #73 Addsociations
Issue #73 Rename class UserNotificatin
Merge pull request #103 from DevYah/C1_AminaZoheir_#73_Notifications_migrations

Issue #73, Add notification migrations
Merge branch 'master' into C1_AminaZoheir_#73_Notification_Module

Conflicts:
	Idearator/app/models/idea_notification.rb
	Idearator/app/models/user_notification.rb