Today's fixing of the URLs completes the upgrades to the latest version of MediaWiki. Among the changes are autocompletion for the search box and a new diff view for changes.
All links should work normally now. If there are any issues left, let me know.
Part of this upgrade cycle was a complete overhaul of the actual way the software is maintained on the server, this included completely removing the software once. Should this action have led to issues with uploads and or be preventing new uploads from happening, do tell.
ModEnc remains in Maintenance Mode, and there are a lot more changes left to apply. Heed the warnings in the header.