text correction, css correction and add of service worker with cache …

…and offline

bug correction on grid column and row number

new interface for mobile version and corrections

correction

comment of each method and properties, text and css for tutorial done

task manager completed

creation of the tools handler for put all the logic in and clear the …

…index.js / start of the tutorial window / add of the openOnce method in the window class

ajout des crédits et du loader v1

Add License