Basic thread test + assets_managers shared_ptr
basic threaded load removed
All loading logic passed into AssetsManager
Trying to resolve file probleme
File load repaired
Entity versionning
Versionning + Creation secured Ok
Versionning tested and approved
Merge pull request #100 from PFA-OpenGL/async-load

Assets loaded from Assets Manager
Merge pull request #101 from PFA-OpenGL/entity-versionning

Entity versionning
Other demos fixed
Callback on local transform
Useless graphnode update calls removed
Merge pull request #103 from PFA-OpenGL/callback-on-transform

Callback on transform
finish to repare the base of durty rendering
ShadowMappingSystem and component put into the renderMesh