movement stuff - sliding
Merge branch 'master' of https://github.com/Lusito/GameDevWeek into physik-master
cat can slide
Merge branch 'master' of https://github.com/Lusito/GameDevWeek into physik-master

Conflicts:
	gdx-kitten-rescue/src/main/java/de/hochschuletrier/gdw/ss14/ecs/EntityFactory.java
	gdx-kitten-rescue/src/main/java/de/hochschuletrier/gdw/ss14/ecs/systems/PlayerMovementSystem.java
Merge branch 'master' of https://github.com/Lusito/GameDevWeek into physik-master