Navigation auf level 2 möglich
switching between level better + water tiles

turtle still stays where it was
change levels
Merge branch 'sea-level--switch-levels' of https://github.com/mayermi/turtle into mayermi-sea-level--switch-levels

Conflicts:
	js/config/levels/level-1.js
	js/models/player.js
	js/states/play-state.js
	turtle.js