Conflicts:
	src/main/java/de/thm/arsnova/dao/CouchDBDao.java
	src/main/java/de/thm/arsnova/dao/IDatabaseDao.java
	src/main/java/de/thm/arsnova/services/SessionService.java
	src/test/java/de/thm/arsnova/dao/StubDatabaseDao.java

compatibility with third party frontends.

API changes:
- /session/visitedsessions => /session/?filter=visited
- /session/mysessions => /session/?filter=owned
Added changed routes to LegacyController.

The method now returns users visited sessions and all sessions connected to
a course the user is enlisted - if connector is activated.

If connector is enabled, user will see in addition to his visited sessions
all sessions linked to his courses.

Merge commit 'refs/merge-requests/12' of git://scm.thm.de/arsnova/arsnova-war into merge-requests/12