Make the ValueProxy(ImapFolder) work with Manolo's patch. Hupa can display folders in west view with RequestFactory now.

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522154 13f79535-47bb-0310-9956-ffa450edef68
fix issue 2&3. 	Handle exceptions thrown in async blocks & Simply injection code

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522155 13f79535-47bb-0310-9956-ffa450edef68