- updated DB scripts.
Added more data layer code for supporting the domain. 80% done I wager.

- moved all entities to the data package, felt wrong to have persistence
  code in model.

- added  unit individual unit tests for all entities.

- moved the persistence.xml from src/test to src/main.

- fixed typo in creation of post_place's primary key.

- updated atelier version: it will be 2.0, so changed it to
  2.0-SNAPSHOT.