Assets pipeline V0.0

An assets pipeline implementation.
This is not perfect but offer better flexibility and huge loading time saving.
All olds assets classes have been removed and replaced by new ones.
In `/Tools` you will find a project who allow you to convert assets to `.cpd`. There is some examples in `DemoScene.cpp` of that project.
Normally assets are already converted and in the Dropbox (you will have to update it). If you encounter problems at load it's maybe because your computer do not have the same endian. So you will have to convert assets yourself (see /Tools/AssetsConvertor). (this problem will be fixed shortly)

Load is approximately divided by 10 or more with serialized assets.

If you have problem with the merge mail me or tag me on an issue first. I'll help you better than by Google Chat.