Localized date resolution

Changing the datatype on our Oracle columns to Timestamp was one important step. Next, LocalizedTimestamp was created (implementing Hibernate's UserType for necessary integration) extending Timestamp and adding a bunch of constructors for multi-purpose instantiation. Moved all of the date converstion stuff into a separate abstract utility class. Followed the code-generation logic in the previous post and added a separate getDateValueLocalized(TimeZone) for specifically localized date columns (also, the date is GMT-ized going in on those same columns).

Took about two days, with the bulk of the work being in the refactoring of existing code and ensuring correct behavior via unit tests.