Board Thread:Support Requests - Getting Technical/@comment-25171833-20150910003730/@comment-25428589-20150910073101

You can't re-enable editing of wiki-wide JavaScript, if that's what you're asking. Staff are working on a solution that will allow it to be edited, but for now, editing it is prohibited.

If you want to re-enable editing of your personal common.js, you need to go to your preferences, tick the box that says "Enable personal JavaScript" and press save. Then you'll be able to edit your personal common.js. (There's more information on this here.)