Thanks to Gabriel Wicke, sysops can now add a stylesheet for their wiki
using [[MediaWiki:Monobook.css]]. The content of these stylesheets
should be similar to the user stylesheets. I have used this feature to
increase the font size on the CJK wikis, as requested on wikitech-l.
Stylesheets for the other skins and configurable javascript will be
implemented soon.
-- Tim Starling