oremj did a bang-up job and we’ve already got what appears to be a fully functional copy of MDC running on the staging server, now happily perking along in MediaWiki 1.9.3. He even updated all our extensions (including our old breadcrumbs!) to run on MW 1.9.3.
Please note that the links in the sidebar to the various languages take you to the deployed version of the wiki, rather than to the staging server version, so watch out for that while you browse about.
We could use some serious pounding on it, including adding and editing stories, to make sure nothing’s broken.
Once the additional extensions we need are installed, I’ll begin working on our new breadcrumbs implementation, among other things. There are several nifty new templates I have in mind that will make various things much nicer, so I want to do some experimenting.