Those are the contents of the old DokuWiki that was hosted at merbivore.com. The plan was, and still is, to transfer the useful parts to the github wiki; however, the markup is not directly supported, so it will need manual conversion.
attic: gzip'd history snapshots. The numeric value in the file names is the Unix timestamp of the change.
pages: Latest versions of the pages.
meta: Metadata. The most interesting thing in there are likely the
.changesfiles, which list modification details. You are welcome to rebuild the history from those in a git repository.
media: A few pictures.