Add auth to topics page
When fixing a conflict in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10608, forgot to add this back. Also fixes broken links :/
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
When fixing a conflict in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/10608, forgot to add this back. Also fixes broken links :/