Check out logger changes from feature/multisite.
Add a .js-extern css class so that embed will know of links that redirect to external sites.
Version 2.2.12.
Checkout functions.render changes from stage.
SSO: added CSS class to Google and OpenID sign in buttons.
Deprecate LogLevel in favour of having the constants on the Logger class.
Merge branch 'master' into stage

Conflicts:
	index.php
	library/core/class.logger.php
	library/core/functions.render.php
Merge branch 'stage' of github.com:vanillaforums/vanilla into stage