Two 404 pages in the repo

It looks like a new pattern for rendering a 404 has been introduced. The new version contains old advice which does not mention that the user may have insufficient permissions to view the resource

Old:

• https://gitlab.com/gitlab-org/gitlab-ce/blob/0de554edc9877748373d94fba978719f891c86e5/public/404.html

New:

• https://gitlab.com/gitlab-org/gitlab-ce/blob/0de554edc9877748373d94fba978719f891c86e5/app/views/errors/not_found.html.haml