Added check to GraphicsManager to allow calling applyCoordinateSystemTransform even if size() has not been called
Fix on MediaPlayerOCV that for some reason in OSX does not behave like in windows as far as the retreived frame (in osx it creates a cv::mat that has 4 channels, RGBA)
Fix on resources manager resource handling on OSX. Now the user data folder points to the Resources folder insode of the app bundle
Added fodlerExists system util function to OSX
Fix warning on TextureQuad::init as enableShadows was called when the isValid flag was not set yet (inside of the init at the end)