Clean up, refactor into ItemListWidget
AssetList uses ItemListWidget instead of ListView
Fix OnDragStart being called when not dragging
Add Paint.SetFlags
Feel tweaks
Successfully make CAbstractScrollArea transparent
Add DebugOverlay to ItemListWidget
CurvePresets uses ItemListWidget
PublishWindow uses ItemListWidget
Refactor
Obsolete ListView
Switch everything in addon from ListView
Give a warning on AuthenticationException when downloading image
Tweaks