General clean up
Added so enter/return can be sent out
Fixed issue with playbutton not appearing every time in tutorial and so you can press enter to start
Javadoc
Formatting
Merge branch 'dev' of https://github.com/ravertass/KandidatRoguelike into dev

Conflicts:
	se/chalmers/roguelike/Engine.java
Merge branch 'dev' of https://github.com/ravertass/KandidatRoguelike into dev