Corrected .3DS loader
Added TinyXML2
Camera no longer has the vertical problem.
Added class to manage rendering
Added light class
Added ShaderManager
Corrected segfault caused by heightmap normals' normalization
Global header added to Graphics
Graphics files sorted
ShaderManager now uses std::tuple instead of std::map
Merge branch 'master' of https://github.com/IMACoconut/ImaKart.git into Nicolas

Conflicts:
	template/include/Game/BaseComponent.hpp
	template/include/Game/Component.hpp