Change documentation about sidekiq
This pull request fix the gitlab:check message when sidekiq is not running(this was mentioned in #5426). Also the development mode in the readme was talking about sidekiq:start.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This pull request fix the gitlab:check message when sidekiq is not running(this was mentioned in #5426). Also the development mode in the readme was talking about sidekiq:start.