Add support for "deleted branch" event
Currently when a branch is deleted, it just says "A S pushed to branch X" when it should really say something like "A S deleted branch X"
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Currently when a branch is deleted, it just says "A S pushed to branch X" when it should really say something like "A S deleted branch X"