remove both of gwt-representer and gwt-dispatch dependencies, add license headers to all new files

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522191 13f79535-47bb-0310-9956-ffa450edef68
fix the serialization issue.

git-svn-id: https://svn.apache.org/repos/asf/james/hupa/trunk@1522192 13f79535-47bb-0310-9956-ffa450edef68