Merge branch '21-clean-improve-update-code' into 'master'

lib/ui/widgets/actions/button_resume_saved_game.dart

lib/ui/widgets/game/game_board.dart

lib/ui/widgets/game/game_board_display.dart

lib/ui/widgets/game/score_box.dart

lib/ui/widgets/game/thinking_indicator.dart

lib/ui/widgets/global_app_bar.dart

lib/utils/color_extensions.dart

pubspec.lock

pubspec.yaml

resources/app/build_application_resources.sh

resources/app/featureGraphic.svg

resources/app/icon.svg

resources/build_resources.sh

resources/ui/build_ui_resources.sh

resources/ui/images/button_back.svg

resources/ui/images/button_delete_saved_game.svg

resources/ui/images/button_resume_game.svg

resources/ui/images/button_start.svg

resources/ui/images/empty.svg

resources/ui/images/game_fail.svg