Add CBE Data, turn off JSON output

Parser now exports one big CSV of all PO data.

JSON output is turned off, because OS X doesn't like writing hundreds
of files at once.  Will fix this later, as this output could be useful
for building a rudimentary API without requiring a database server.

Added some CBE datasets.

May eventually remove raw data from this repo, as everything's now
finding a home on CKAN.