Scorm Progress

Okay, so I've got the basic mapping in place for the SCORM_2004_DM and underlying classes... which covers the bulk of the datatypes under org.adl.datatypes.

A few changes were necessary to get the ADL code to play nicely with hibernate, which I think can be implemented as fairly global refactorings if we need to update the source code....

Also added mappings for most of the 'sequencer' domain classes

Modified domain model classes for hibernate mapping.