Fix the `service gitlab restart` command
This commit addresses two related issues:
- Sidekiq should shut down completely before we restart it;
- If we restart unicorn with USR2 we need to kill the old master and worker processes.
/cc @randx @jaypea
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This commit addresses two related issues:
/cc @randx @jaypea