It's now possible to move the search box up in the sidebar, above links
generated by [[MediaWiki:Sidebar]]. This is done by adding a section
called "SEARCH" (case-sensitive) to [[MediaWiki:Sidebar]], in the location
you think it should be. For instance:
** Portal:Featured content|featuredcontent
It's also possible to move the languages box and the toolbox in the same
way, using LANGUAGES and TOOLBOX.
Do not put second-level links under the special headings:
** Don't add a line like this
It doesn't do anything useful (yet).
-- Tim Starling