Merge pull request #318 from isuftin/master

OpenID now working to allow a user to log into the application
Tied in OpenID to a user's HttpSession so state is maintained between reloads of the application and reloads of the metadata window. 

I also now place a "Publish" menu item onto the Session menu in the session management window.  It is currently not hooked up to anything. 

I removed the LogoutService servlet and moved that functionality into the SessionService servlet as another action.