Finally fix the 'impossible records' bug!
Thanks for a bug report from Jacob Powell - if one, during scrambling, minimized the app and re-entered it, the UI lock got removed (by a call to 'unblockEverything' from RubikActivity's onResume) and one could then keep solving the object mid-scramble....
Purchase Pane: further progress.
IAP part 5: new 'Purchase' activity (cont'd)
IAP part 5: new 'Purchase' activity.