Magic Cube

Make object scrambling abstract (well, almost - with exception of Square-1 - this theoretically could also be done the generic way, but this would require almost 20000 'ScrambleStates')

Some more debugs for the case when the UI is blocked.

safety!

Improvements for the PopupWindows: now they work:

1) on Android 11, everywhere
2) on Android 10,9,8.1,8.0 - in case of fullscreen and split-screen modes; pop-up mode still does not work.
3) on Android <= 7.0 : there should be no pop-up mode, so they should be working in all cases

Defer initialization of statics in RubikNetwork till we actually need them.

Remove statics from the TwistyObject class.

Fix play screen popups in case the whole app is in 'multi-window' or 'pop-up window' state.

Simplify Play Screen popups.

Make the 'Play' popup always fit within the window height.

Remove statics from the Ultimate class.