I just write a simple web page rpc-application, that recognizes the platform on which it is run, and has a different UI for mobile and for desktop.
Gwt stands for browsers and Mgwt for m. webkit, and I tried to use a proper arhitecture to load the right GUI.
If you test this on a desktop machine use firefox for desktop and google chrome to emulate mobile appearance(with http://ipad-emulator.org/).
So, this is:
And if you would like to download the source code: