Maintenance release for GWT-SL, sample applications and FAQ

A new release (1.0.2) is now available. It corrects a ClassLoader issue for GWT-SL(Spring) integration, and the patch submitted by Norman Maurer for ExplicitCloneMapper.

Furthermore, a sample application is now available for each hibernate4gwt configuration (stateless, stateful, Java5 and dynamic proxy). It can be used as a pattern for a new project, or to see "how it works"...

Finally, I wrote a small FAQ for commonly asked questions I used to answer on the library forum or the official GWT one.