Integration of Hibernate into this skeleton.
Moved persistence.xml to right destination, corrected jndi lookup.

Added test for correct data source from jndi lookup in ServletContext's contextInitialized().
TODO: Working db connection.
The EntityManager can be instantiated now. However, persisting entities throws 

UnsupportedOperationException: The user must supply a JDBC connection

TODO.
EclipseLink working.

 - No GenericGenerator Annotation like Hibernate.
Improved configuration:
Startup time for jetty 9 improved, added comments.
Refactored, this should be a reusable skeleton project instead of the original kickstart of a testvector-webservice.