Replaced PersistanceManager and IWidgetInstance with AuthToken and SPI

git-svn-id: https://svn.apache.org/repos/asf/wookie/trunk@1566407 13f79535-47bb-0310-9956-ffa450edef68
Removed persistence tests - we'll need to create new tests based on the SPIs

git-svn-id: https://svn.apache.org/repos/asf/wookie/trunk@1566408 13f79535-47bb-0310-9956-ffa450edef68