fixed some linux only commands in debug and profile configuration
made the monte carlo scene more like the blender one (smaller top-light), this makes the scene far worse
Merge branch 'master' of https://github.com/CantTouchDis/ElTrazadoDeRayos

Conflicts:
	src/RayTracerLib/Scene.cpp
small code cleanup
refractive index is now a stack,
prepared everything for dynamic stopping based on color contribution
Merge branch 'master' of https://github.com/CantTouchDis/ElTrazadoDeRayos

Conflicts:
	src/RayTracerLib/Constants.h
the ceiling is now light source again (because the other one took way too long or was way too dark...)