First Pass of Demokritos Persistence Done

@84 on the Demokritos trunk now has full persistence of members and collections into a subversion repository.

At the moment there's no caching (so subversion gets hit every request) and transactions are overly granular. As a result, performance isn't great. But it seems to work!

The original post was in the categories: python subversion atompub demokritos but I'm still in the process of migrating categories over.