Pr05 Typescript Migration #18: Migrate `client/modules/About` & `client/modules/Legal`#3702

raclim merged 18 commits intoprocessing:developprocessing/p5.js-web-editor:developfrom

clairep94:pr05_finals_clientModuleAboutclairep94/p5.js-web-editor:pr05_finals_clientModuleAboutCopy head branch name to clipboard