Merge branch '41-improve-clean-code' into 'master'

android/gradle.properties

assets/skins/default_button_mark_mine_off.png

assets/skins/default_button_mark_mine_on.png

assets/translations/en.json

fastlane/metadata/android/en-US/changelogs/39.txt

fastlane/metadata/android/fr-FR/changelogs/39.txt

icons/skins/default/button_mark_mine_off.svg

icons/skins/default/button_mark_mine_on.svg

icons/skins/default/indicator_report_off.svg

icons/skins/default/indicator_report_on.svg

lib/config/menu.dart

lib/cubit/bottom_nav_cubit.dart

lib/entities/cell.dart

lib/main.dart

lib/provider/data.dart

lib/ui/widgets/game/mode_indicator_report.dart

lib/ui/widgets/settings/theme_card.dart

lib/utils/game_utils.dart

pubspec.yaml