First attempt for normal mapping
improved normal mapping, changing light position in order to see how it works
specular intensity hinzugefuegt, evtl. fehlerhaft
Merge branch 'texture' into pipeline-2

Conflicts:
	game/ChunkView.cpp
	game/ChunkView.hpp
	game/CraftGame.cpp
	game/MapView.cpp
	game/MapView.hpp
	shader/CraftGame.vsh
Updated Lumina, RenderBuffer implemented.
MapView texture load, smaller texture implement.