a feature for stewards on http://meta.wikimedia.org to post a single message
which will be displayed on top of Special:Recentchanges on all wikis (similar to
MediaWiki:Sitenotice but to be displayed on RC only).
Note: this idea came up at the last public board meeting. It would be really
great to have this feature to help projects like [[meta:Translation of the
week]] and [[meta:Reports]].