Remove unnecessary parens and other code style fixes
This MR is based on reviewers` comments to https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/440
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This MR is based on reviewers` comments to https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/440
Changed title: Remove unnecessary parens → Remove unnecessary parens and other code style fixes
Status changed to merged
mentioned in commit f991b7fc