Normalize game architecture

android/app/build.gradle

android/gradle.properties

assets/images/blank.png

assets/images/left-foot.png

assets/images/left-hand.png

assets/images/right-foot.png

assets/images/right-hand.png

assets/translations/en.json

assets/translations/fr.json

assets/ui/button_back.png

assets/ui/button_delete_saved_game.png

assets/ui/button_resume_game.png

assets/ui/button_start.png

assets/ui/game_end.png

assets/ui/move-blank.png

assets/ui/move-left-foot.png

assets/ui/move-left-hand.png

assets/ui/move-right-foot.png

assets/ui/move-right-hand.png

assets/ui/placeholder.png