[PR] Update to PHP 5.5, refresh current states of WSUWP Platform

* [x] Update Salt Bootstrap script (2014.02.27)
* [x] Enable CentOSPlus repository to resolve a postfix dependency with MySQL
* [x] Use a more defaultish mysql.sock location
* [x] Upgrade to PHP 5.5
* [x] Many Salt state dependency updates for more consistent provisioning
* [x] Compile Nginx from source, including Pagespeed and SPDY modules
* [x] Update WSUWP Indie to work with provisioning