State should not depend on the API server

[Eric Snow]

On Mon, Sep 1, 2014 at 12:03 AM, John Meinel <john at arbash-meinel.com> wrote:
> FWIW I'd favor 3 layers, though it does mean you have to do copying between
> structs that would likely otherwise be almost identical. A State layer for
> saving in the DB, an API layer for communication, and a Model layer for use
> in the Agents/Clients.

This is pretty much what I've done for the new backups in response to
conversations with Menno and William.  It's worked out fine.  The 3
types are similar, but in each case have been slightly different.  So
the choice of having them different has proved helpful.

-eric