access item.project only if item.isDeleted is false#1787

catarak merged 2 commits intoprocessing:developprocessing/p5.js-web-editor:developfrom

sagar-joshi:bug-editor-crashes-on-adding-sketch-to-a-collectionsagar-joshi/p5.js-web-editor:bug-editor-crashes-on-adding-sketch-to-a-collectionCopy head branch name to clipboard