Magic Cube

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

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.

Again abandon RubikControl (after bumping into hard-to-solve issues)

add possible scrolling to the 'object' popup in case the grid of objects does not fit on the screen.

Lots of changes :)

Progress with RubikControl.

Always set the back move icon when we clear moves

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.

Separate the notion of maxLevel (in DB) [which has to stay backwards-compatible with previous versions of the app] and 'numScrambles' - the number of times an objects gets scrambled in the 'full scramble' mode. Now the second can be whatever we want without breaking backwards compatibility.

Fix the fact that in the last, 'Full Scramble' level, it wouldn't switch on the green light.

Backing moves: constant angle speed (part 2).

Square-1: beginnings

Bugfixes for two issues with 1.8.0 seen in the field.

Switch Rubik Control off for the moment.

RubikControl: fixes; progress.

Cube Control: step 2.

Rename 'state' to 'screen'