Split notification specs according to codebase modules
This is a continuation of !2785 (merged) and closes #13427 (moved). Notify spec was removed since it had no specific test left.
@grzesiek, can you please review this?
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This is a continuation of !2785 (merged) and closes #13427 (moved). Notify spec was removed since it had no specific test left.
@grzesiek, can you please review this?