Replaced calls to DWR from the wookie.js feature script, instead using AJAX to directly call Wookie services

git-svn-id: https://svn.apache.org/repos/asf/wookie/trunk@1572756 13f79535-47bb-0310-9956-ffa450edef68
Removed dependency on DWR for core widgets; this is only needed for widgets using the Wave, oAuth and Wookie-Ext features.

git-svn-id: https://svn.apache.org/repos/asf/wookie/trunk@1572757 13f79535-47bb-0310-9956-ffa450edef68