Safely releasing meshes materials and models
Fixed multiple doors per tile

Also converted some junky code to neat flags
Removed some junky code
Functies omgeschreven voor leesbaarheid

ook makkelijker te gebruiken
Merge branch 'master' of https://github.com/Dutch-devil/HTBaL

Conflicts:
	src/Floor.cpp
	src/HouseRenderer.cpp
	src/Room.cpp
	src/Room.h
	src/Wall.cpp
	src/Wall.h