Add Hibernate Validator implementation with dependencies.
Moved jboss-logging as top level lib due to shared dependencies.

Shared dependencies
-------------------

jboss-logging API :
  between Hibernate JPA and Hibernate Validator

javax.validation 1.1 API :
  between Hibernate Validator and Jersey JAX-RS 2.0

Expression language 2.2 API and implementation:
  between Hibernate Validator and Servlet Container (Tomcat 7 contains
  EL 2.2 API and implementation, Tomcat 6 needs an update from EL 2.1
  API and implementation to 2.2 -- can be copied from Tomcat 7 binaries).
Update object model libs.