Remove default Leiningen template test.
Switch to Cheshire for JSON I/O.

Supposedly Cheshire is faster, but it also encodes java.sql.Timestamp by
default, which is reason enough to throw it in.
Move resource definitions to server.resources namespace.

Perhaps later there will be a justification for moving database lookup
code out of the resource definitions, but for now, this is probably as
much separation of concerns as I need.