Ajout de Node.h et Node.cpp, changement de Track.cpp et .h
Reglage problème PowerObject (il reste un problème avec Stan)

Merge branch 'master' of https://github.com/Bazard/HeroKart

Conflicts:
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	build/CMakeFiles/HeroKart.dir/CXX.includecache
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	build/CMakeFiles/HeroKart.dir/objects1.rsp
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	build/CMakeFiles/HeroKart.dir/src/PowerObject.cpp.obj
	build/CMakeFiles/HeroKart.dir/src/Track.cpp.obj
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