Add DeWet's Show to culture page
follows https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/4722, messed up with line endings mode
closes https://gitlab.com/gitlab-com/www-gitlab-com/issues/1081
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
follows https://gitlab.com/gitlab-com/www-gitlab-com/merge_requests/4722, messed up with line endings mode
closes https://gitlab.com/gitlab-com/www-gitlab-com/issues/1081