Refactoring
- WorldController doesn't draw anymore
- WorldController has now 1 single method for getting input

- WorldView handles the rendering of the World

- DynamicTile is an abstract class for all tiles that the user can
interact with (spells)

- Changed how the Game determines its level

much more...
+ Added BitmapFont with a small test in TutorialScreen
Made some changes to the looks of tiles
Ice now has one state more before breaking.
removed the  max hit count.
stachle
abrunde
+ Mouse cursor