TwistyPuzzleLib

Fix important bug in Minx'es detection of the solved state.

off-center objects: finished.

progress with off-center objects.

1) introduce possibility to move objects, i.e. display them not in the middle of the screen (not fully functional yet)
2) do away with unneeded any more interface 'EffectController' - since ObjectPreRender is the only implementation now.

Remove the 'setupObject()' redundant API.

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