use Units map code and upgrade django to 3.2.13

[smcalilly]

Overview

Fixes:

• 804

• bumps Django to 3.2.13 due to a security advisory

Dependent on merging the PR for the complex_fields dependency.

Notes

The code was expecting incident locations to have x,y coordinates, but sometimes the data is a polygon geometry type.

I used the code from this PR to render the map depending on geometry type. Very easy to work with!

Testing

• Pull down branch
• Import ye: docker-compose --env-file .env.import run --rm app make -e ye_cc_import
• For comparison, import another country (small dataset): docker-compose --env-file .env.import run --rm app make -e mr_cc_import
• See a location with a polygon (in ye data): http://localhost:8000/en/violation/view/045cab2d-fe37-4487-b364-b7b202529c62/
• See a location with a point (in mr data): http://localhost:8000/en/violation/view/f19204ab-301a-4a77-9c6d-a05dedc09472/

Note that with the partial import, an incident is missing the country. This happens to me with both the master branch and this PR's code change.