Magic Cube

Change the 'Cube Back' icon when there are no moves to back.

Abstract the part that controls the 'Locked' and 'Back Moves' buttons from the two activities: the main one and the tutorial one.
This code had been duplicated there.

Add flag of Botswana.

New Kilominx mesh.

Important bugfix: no we cannot unblock touch when WIN effect finishes, because

1) starting the WIN effect does not block touch in the first place
2) it can happen that this unblocking happens when we have started finishing the rotation but haven't removed it yet...

Corrections for the new Pyraminx5 patterns.

Update the Pyraminx5 pretty patterns.

New Megaminx & Gigaminx pretty patterns.

Convert the move format to one which can hold moves of the Megaminx and Gigaminx (in preparation for introduction of the Mega& Gigaminx Pretty Patterns)
Now we use 2 bits for the angle, 3 bits for the axis and 5 bits for the bitmap of layers. This totals 10 bits so 1024, but the whole thing will not spill over 3 digits, because in the Minxes we have total of 6 axis, not 8.

Workaround for a crash.