Added tests for grid and form
Introduced w2utils.settings.RESTfull = false

If it is true, then the grid and form will submit trully RESTfull calls
(GET, PUT, POST, DELETE)
Fixed problem with $().w2popup('message') when main area is scrolled.
Various bug fixes in w2grid and w2form. Mostly related to server side calls and parsing

- Fixed issue #55
- Fixed issue #56
Recompiled JS and CSS files.