District Instance
list: Return all districts, which can filter ballot items.
retrieve: Return a specific district, which can filter ballot items.
GET /api/districts/10349/?format=api
http://michiganelections.io/api/districts/10349/?format=api", "id": 10349, "category": "Local School District", "name": "Proposal Shall Newaygo Public School" }{ "url": "