Adding OAuthPortletFilter and save accessToken to portletSession, so it's available in all phases of portlet lifecycle
Added FacebookRequest and using it in FacebookUserInfoPortlet
Improve error handling in FacebookStatusUpdatePortlet
Introduce FacebookClientWrapper to improve MVC in FacebookFriendsPortlet and handle error flows in FacebookFriensPortlet
Add support for Google and Twitter into OAuthProviderFilter
Improve error handling in Google portlets
TwitterPortlet error handling
Refresh form values in FacebookStatusUpdatePortlet if error occured