Refactor the native code for opening our C# AssetPicker - make it easier to slot in for the other embedded asset browsers and easier to extend
QAssetSelectionWidget ( used in propertysheets to select assets ) uses C# AssetPicker
Hide these buttons in QEmbeddedAssetPicker, I'd be surprised if anyone misses them
CQEmbeddedAssetPicker opens C# AssetPicker