snake_ify Reporter's camelCased attribute names

[thejunglejane]

Not everywhere does addresses like this.

placemark_snapshot_dict = {
    ...
    'city': placemark_snapshot.get('locality'),
    'county': placemark_snapshot.get('subAdministrativeArea'),
    'state': placemark_snapshot.get('administrativeArea'),
    ...

[thejunglejane]

On a more global scale, I should just snake_ify Reporter's camelCased attribute names. This will obviate the need for a _report_key_mapper, and avoid failures if/when Reporter's attribute names change.

[thejunglejane]

• Update models.questions
• Update models.reports
• Update models.responses
• Update tests
• Update data model