Dynamic map object
LvlLoader: load all asset for the lvl
Merge branch 'dev' of https://github.com/Vixys/Projet-emAll into dev

Conflicts:
	index.html
	js/Player.js
	js/TestContext.js
Merge branch 'dev' of https://github.com/Vixys/Projet-emAll into dev
Asynchronous load