Update tuto 3 for tablets and Safari

assets/css/tuto3-3.css

assets/js/tuto3-2.js

assets/js/tuto3-3.js

assets/js/tuto3-4.js

assets/js/tuto3-devices.js

data/tuto3-3/templates/chapitre01_etape01.handlebars

ext/animaux/css/style.css

ext/fakeyolo/data/fakeyolo.json

ext/fakeyolo/index.html

ext/fakeyolo/js/app.js

ext/robert/data/robert.json

ext/robert/js/app.js

ext/roue/css/style.css

ext/roue/index.html

ext/roue/js/roue.js