Restyles the user cards on homepages. Mostly minor tweaks.
Fix - removes pulldown from global topnav when the user isn't logged in.
Adds the RETRO option to the gravatar settings section in the Admin.
Fixes bugs in the avatars for answers and comments.
Merge branch 'v2UI' of github.com:jchubber/CareerVillage into v2UI
Adds a header link to the admin section for superusers.