Update permissons links to new page
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5210 updated the location in the docs, but we link to this page a bunch in the app too.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5210 updated the location in the docs, but we link to this page a bunch in the app too.