Removing the backup documentation for GitLab
Moved to the new place https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/621
according to this comment https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/345#note_1201280
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Moved to the new place https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/621
according to this comment https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/345#note_1201280