So we now run a find command which pipes to xargs to delete directories under /path/to/settings/deleted that haven't been modified in 30 days. This gives us enough time to hopefully notice we've deleted the wrong wiki or for someone to appeal a deletion (not that we have a formal appeals process) while not hoarding deleted wikis forever.

So this turned out to be surprisingly difficult to actually fix. For some reason, the server keeps throwing me either old or 503ing CSS...