Shuffl back-end selected

The initial back-end software for Shuffl has been selected and checked out. I'm planning to use AtomPub for the back-end protocol, and eXist as the back-end database. Rationale for the choice can be seen at http://code.google.com/p/shuffl/wiki/BackendSystemsSurvey. I've installed eXist (piece of cake!) and run a series of tests against the out-of-box installation to demonstrate the identified capabilities are all present. See http://code.google.com/p/shuffl/source/browse/#svn/trunk/spike.