Merge pull request #21 from manolo/master

Simply Ajax plugin using Deferred helpers for RequestBuilder and Jsonp. Add Deferred Helper for Jsonp.
Merge pull request #22 from manolo/master

Implementation 'then', queue/effects promises & 'when' with any object
Fix casting exception
Deferred object is not needed to be a plugin of gquery
Change some browser dependencies so as we can use Deferred and Callbacks in JVM, added Jre tests for this stuff
Deprecate gwtquery JsRegexp implementation in favor of gwt RegExp which does exactly the same in client side, and works in jvm as well. Remove some imports