Java: 1.6 -> 1.7, JAXB: 2.1 -> 2.2
Java: 1.6 -> 1.7, JPA: 2.0 -> 2.1
setup documentation for backend project
add context.xml files so that the frontend and backend projects can be deployed onto WTP tomcat8
removed invalid queries
Java: 1.6 -> 1.7