FORGE-1060 Initial commit
FORGE-1060 Committing working version of 2-level DTO generator.
FORGE-1060 Initial working REST resource generator.

This kind of works, but requires fixing for nested DTOs. The persistence context should be queried to setup the linkage.
FORGE-1060 Added support for populating associations
FORGE-1060 Added an introspector for extracting property info.

This now enables fields and accessors to be treated the same way, thus making all properties in the JPA entity eligible for inclusion in the DTOs. Separate treatment is therefore not required for accessor methods in entities, or for JPA entities that use PropertyAccess instead of FieldAccess.
FORGE-1060 Fixed ConcurrentModificationException

Removal of items from JPA collections is now done via Iterator.remove since a ConcurrentModificationException would be thrown otherwise when obtaining the next element in the collection.