Neue Texturen in jpeg-File
Map wird um die Kamera herum generiert und angezeigt.
Generierung der Box in der ChunkView in eigene Methode ausgelagert.
Merge branch 'texture' into hsr

Conflicts:
	game/CraftGame.cpp
Merge remote-tracking branch 'origin/map-fixes' into texture

Conflicts:
	game/CraftGame.cpp
Merge remote-tracking branch 'origin/hsr' into texture
Textures added
Grass texture on top
Added ambient and diffuse lighting
Texturen angepasst