I added a generic message called 'sitenotice' to Language.php that
replaces fundraising_notice and shows up in Special:Allmessages. It's
parsed as normal wiki syntax now. The code that does this is a live
tweak in Setup.php on Zwinger currently, imo it would make sense to
replace $wgSiteNotice with it, with a default of '-' = switched off.
Opinions?
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Gabriel Wicke