** Removed ubuntu one entities from persistence
** Removed u1 references from CKBrowser servlet
** Removed u1 references from Forge index
** Removed ubuntu one connect view from Forge
** Removed u1 references from MaterialController
** Removed u1 references from MaterialServlet
** Removed u1 package (controller, manager and scheduler)
** Removed u1 icon
** Removed ubuntu one authentication strategy
** Removed u1 icon reference from forge-document.scss
** Removed u1 keys from SystemSettingKey
** Removed unused illusion-map.js (contained reference to u1)
** Disabled Yahoo login because it does not work anymore