www.gitlab.com not redirecting to about.gitlab.com or gitlab.com

Right now www.gitlab.com is acting as a separately authenticated gitlab.com website. IIRC shouldn't this redirect to about.gitlab.com, at least for unauthenticated users?

$ curl https://www.gitlab.com
<html><body>You are being <a href="https://www.gitlab.com/users/sign_in">redirected</a>.</body></html>

As it is now, people are authenticating against both, only logging out of one at a time, and getting errors as they move between them.

@northrup @pcarranza @jnijhof @yorickpeterse