Issue #73 add read column in UserNotifcationUsers and IdeaNotificationUsers, add link_name column in IdeaNotification and UserNotification
Issue #73 fix notification migrations
Issue #73 fix EditIdeaNotification migration change add to remove
Merge branch 'C1_AminaZoheir_#73_Notifications_migrations' into C1_AminaZoheir_#73_Notification_Module
Issue #73 Change .new and .save to .create in notification models
Issue #73 Add link method to notification models