ImageLoader: isLoaded always returns true when source is a Texture (closes #980)
MetalWorksDesktopTheme: fixed issue where horizontal scroll bar thumb was missing
MetalWorks themes: readme tweaks
added MetalWorksDesktopTheme to build.xml
FeathersControl: fixed issue in setSize() where it didn't reset scaledActualWidth/Height when value is NaN like in the width and height setters