Magic Cube

Use the off-center objects to display the object in Tutorial mode properly.
Now it is not covered by the right bar!

Remove the 'setupObject()' redundant API.

Minor

Further simplifications.

Remove the concept of a 'TwistyActivity' altogether.

Hide most of the TwistyActivity methods inside objectlib.

Bugfix: we shouldn't be calling TwsityObject.solve() directly from the app, only through ObjectControl.solveOnly().

Simplifications

Move RubikControl to objectlib (as 'ObjectAutomator')
Hide ObjectPreRender inside objectlib and move its APi to ObjectControl.

1. Remove 'db level' from objectlib (this belongs to the app!)
2. change ScreenPlay's 'mObject' to be an ObjectType.