Add git ignore file in submodules
Major changes due to Ilias integration

* Use Spring MVC instead of Apache CXF JAX-RS implementation
* Upgraded Spring Framework to 4.0
* Use Spring Java Config instead of XML config files in service application
* Added basic Ilias Repository access including LDAP authentication
Changed required Java version to Java 6 due to restrictions on build server
Fixed Java 7 <> operator for use with Java 6
Fixed some issues detected by sonar
Changed property handling
Some more issue fixes
Added tests for UniRepController and moved controller tests
Use Spring HttpEntity in UniRepController
Added simple service test using mockito
Added some documentation
Secured old connector function to act like pre 0.20 connector service
Fixed some minor issues in project config and code styles
Moved Ilias model classes into model module
Added new security rules and configuration
Remove nodes without children or questions
Added basic gradle configuration
Added some more gradle configuraton to complete build setup
Added sonarRunner plugin to gradle config
Added filter for meta tags