Issue #73 Remove link field from Notification tables
Edits the seed.rb file again

Same records were created multiple of times, now corrected.
Merge pull request #111 from DevYah/master_modifications

Edits the seed.rb file again
Issue #73 Add comment to last migration
Merge pull request #110 from DevYah/C1_AminaZoheir_#73_Notifications_migrations

Issue #73 Remove link field from Notification tables
Merge branch 'master' into C4_Gezeery_#52_view_user_profile