Two months ago, I committed r63300 (and the follow-up r63338) to fix bug 10183 by allowing users to add skin-independent custom scripts and styles to the subpages /common.js and /common.css of their user page. I'd hoped that the change would've been deployed to Wikimedia sites by now, but as this hasn't yet happened, it would be nice to get it done before the default skin on e.g. en.wikipedia is changed from MonoBook to Vector (currently planned for May 13, apparently).
Version: unspecified
Severity: enhancement