Merge pull request #76 from Flamaros/master

Fix Compilation in release mode with Visual Studio
- Scope support (Components, this...)
- Optimization
- Refactoring
- Better errors
- Properties without signal
- id in IItemBinding
Merge pull request #77 from bdeligny/DMLEngine-scope-pull

- Scope support (Components, this...)
Merge branch 'upstream/master'