Revert "Project modernization (#630)"

This code was not tested and breaks in Release builds, reverting to restore
functionality of the nightly. All in-game menus do not work and generating
a world crashes.

This reverts commit a9be52c41a.

Minecraft.World/TripWireSourceTile.cpp

@@ -12,7 +12,7 @@ TripWireSourceTile::TripWireSourceTile(int id) : Tile(id, Material::decoration,
 
 AABB *TripWireSourceTile::getAABB(Level *level, int x, int y, int z)
 {
-	return nullptr;
+	return NULL;
 }
 
 bool TripWireSourceTile::blocksLight()