ho ho (not) very much

Due to https://github.com/facebook/hhvm/issues/1437 not much works.
Basically you can browse around logged in over http if you set the
hhvm=1 cookie.

Change-Id: Ic9cdd67e120fb7fecb7eeef5d22e19b4008744c5
Merge "ho ho (not) very much"