Refactor RubikObject in preparation for creating RubikObjects from DownloadedObjects.
Re-organize tutorial list so that we can pull this one from JSON files.
Fix setDefaultRotation() when changing an object; do it at exactly the right time when the 'old' object has already disappeared, but the new hasn't been attached to the Nodee yet.
Include the info about 'numFaces' of a puzzle in the jsons.Based on this, and the recently introduced 'DEFAULT_ROTs' to the basic Shape classes, rotate each object in the Config so it looks attractive.
Add info about FPS.
Introduce 'Simple' and 'Nice' meshes.
Progress with Config UI.
Progress with Object Config UI.
Progress replacing the enum ObjetType with the class RubikObjectList.
Progress with ConfigPane.
Progress with ConfigScreen.