setup.py cleanup
Update MD loader to add party fields to Result

Make sure the MD loader adds party and raw_party fields
(in many cases they're the same) to the created Result object.

No longer add a parties field to the created Candidate.

Addresses #48
Merge pull request #53 from ghing/48-add_party_fields_in_loader

Update MD loader to add party fields to Result
Merge branch 'dev' into 39-bakery

Grab changes to MD loader reflecting changes to the party/parties
field on Result/Candidate models.