Make tests use HSQL

Move DB config from persistence.xml back to glassfish-resources.xml
Modify build so that it correctly selects the Arquillian container at runtime via arquillian.launch
Expand the README some
Fix Arquillian config for GlassFish Managed

Modify script to download GlassFish 4.0 final
Modify script to copy required jars to GlassFish's lib dir
Change MediaServiceTest to load resource from classpath
Modify Deployment setup to add GSON and Jackson classes
Add GlassFish Remote config and task