Bumped version numbers of dependencies

* Bumped the version numbers for most dependencies
* Jetty updated to 9.2.6.v20141205
* Resteasy updated to 3.0.10.Final
* Hibernate updated to 4.3.7.Final
* Hibernate validator updated to 4.3.1.Final (had to stay on 4.x as the newest Resteasy doesn't support 5.x yet)
* Did not update the h2 and postgres dependencies