Split context files per layer, allowing easy testing of a subset of the layers.

Split Jdbc and Hibernate configuration in separate test and production files, where that makes sense, and keep common properties in a single location (context file). Properties files are pulled into the context by Spring.  

Split out a javax.sql.DataSource bean, which is handy for a number of reasons.

Hibernate configuration prepared, but no classes are mapped. Test config is in-memory and verbose, production is file-based and quieter.

Transaction is annotation-driven in the service layer.

Jetty Maven plugin added, and added context loading listener to web.xml. It's now possible to run "mvn jetty:run" and find the tracking page on localhost:8080/dddsample.

Added dev.java.net maven repository with JTA artifact available.