Progress with RubikControl.
Lots of changes :)
Introduce a BlockController - a watchdog which makes sure the Touch and UI blocks do not take too long.If it detecs a long block, it unblocks and reports the situation to Crashylytics.
RubikControl: rotate the cube.
RubikControl: fixes; progress.
Attach the control nodes directly to the screen, not to the Object Node.
Cube Control: step 2.