user profile page v3 is enabled sitewide since 27th March 2012
remove class_exists() call because Masthead class is loaded when UPPv3 is loaded and this extension has been enabled sitewide since 2012
small clean up
even smaller cleanup ;)
fixed image in Facebook Connect
Merge pull request #2472 from Wikia/CONN-27

CONN-27 Fixed pulling avatar in Special:Connect; QA'ed on branch. Branch merged manually to dev and run unit tests after that -- all passes.