Adds additional fields to chorolpleth

This creates three additional fields on the choropleth viz bundle.

These are necessary to properly wire the resource data column to the geojson property key. Also the "name" in the hover may not be the same as the geojson property key so that is also an option.

Ticket: https://github.com/NuCivic/nucivic-internal/issues/205

Requires: https://github.com/NuCivic/recline.view.choroplethmap.js