Huge huge refactoring of model - THIS IS UNSTABLE
Merge branch 'master' into feature/memcached

* master:
  Huge huge refactoring of model - THIS IS UNSTABLE

Conflicts:
	src/ch/uzh/ifi/se/yapp/model/geo/GeoBoundary.java
	src/ch/uzh/ifi/se/yapp/model/landscape/District.java
	src/ch/uzh/ifi/se/yapp/model/landscape/Election.java
	src/ch/uzh/ifi/se/yapp/model/visualisation/Visualisation.java