Adjust DAOs and facades to prevent cyclic dependencies, add new DAO and facade for Credit, edit interfaces and adjust entities, delete old unused entities
Merge branch 'master' into dev

Conflicts:
	server/src/at/ac/uibk/informatrix/ride4earth/data/hibernate/entities/CommunityUserImpl.java
	server/src/at/ac/uibk/informatrix/ride4earth/global/interfaces/Feedback.java