Workflow - initial steps

For the initial steps, it's a bit more involved than what I'm used to when targeting PAAS providers. These notes are relevant to creating a dev environment that involves live droplets.

- [x] Create a droplet I can use for configuration-only work.
- [x] Kill it if I'm stepping away from this for more than a few days.
- [x] Implement [Initial server setup](https://www.digitalocean.com/community/tutorials/initial-server-setup-with-ubuntu) steps, noting divergences from the guide.
- [x] Implement [django on DO](https://www.digitalocean.com/community/tutorials/how-to-set-up-django-with-postgres-nginx-and-gunicorn-on-ubuntu) steps, noting divergences from the guide.