Maven multiple module re-org

[bryantrobbins]

Update folder structure to use multiple maven modules rather than single.

[opensource21]

What do you want achieve with multiple projects? The project has not so much files.

[bryantrobbins]

This is more in support of future development than the current code. Agree that the current codebase does not really need splitting, but as we add widget libraries for various platforms (GWT, jquery, etc.) we don't want to require users to include libraries and code for these just to use a feature for a single platform.

Also, we have ideas for some supporting modules which are not part of the main code (example projects, maven archetype, etc.).