On branch Benedikt
 Changes to be committed:
	deleted:    src/game/BufferTools.java
	modified:   src/game/Grid.java
	modified:   src/game/GridCell.java
	modified:   src/game/Main.java
	modified:   src/game/ResourceManager.java
	modified:   src/gui/BuildingPanel.java
	modified:   src/objects/BuildPreview.java
	modified:   src/objects/Entity.java
	new file:   src/objects/Mesh.java
	deleted:    src/objects/Model.java
	modified:   src/objects/ObjectLoader.java
	modified:   src/objects/Streets.java
	modified:   src/objects/Terrain.java