Minor logical fixes on rendering the scene.
Tests with the UI for the game editor.
Added UI libraries.
Code refactoring.
Visual enhancements.
Additional models and controls for the property editor, scene viewer and game objects control.
Added category setting through custom attributes to property editor's model.
Fixed a bug when loading the game objects configuration file.
When saving an xml file the path is no more hardcoded.
Now textures are being loaded to the game objects tree view.