feat: big front update + clean comments

cu-logo.png

front/public/img/icon.ico

front/public/index.html

front/src/App.js

front/src/components/CheerUp.js

front/src/components/Classement/ClassementEquipe.js

front/src/components/Classement/ClassementIndividuel.js

front/src/components/Classement/ClassementSprint.js

front/src/components/Draft/ClassIndivHP2.js

front/src/components/Draft/Formulaire.js

front/src/components/Draft/GridClassement.js

front/src/components/Draft/HomePage.js

front/src/components/Draft/KiloSB.js

front/src/components/Draft/KilomSand.js

front/src/components/Draft/Toggle.js

front/src/components/Draft/ToggleSandbox.js

front/src/components/HumaCS.js

front/src/components/LeaderboardSB/ClassementEquipe.js

front/src/components/LeaderboardSB/ClassementIndividuel.js

...t/src/components/LeaderboardSB/LargeScreen/Leaderboard.js