Create a landing page + SEO

A custom landing page should be fine. Spin something up in Flask/Sanic.

All it will do is POST emails to the DB to build up a mailing list.

Actually, will be implementing this using Django.

TODO

[x] Get a basic Django app up and running.
[x] Design a basic landing page using Bulma.
[x] Write basic landing page email form.
[x] Port all SQL models to Django ORM. Preserve table names!
[x] Add a new model for landing page signup form.
[x] Write a simple Django view that takes user email, stores it in DB, then asks user to verify their email. Once verified, email will get active flag set to True.
[x] Create a basic Gunicorn systemd unit for socket and server
[x] Prepare Nginx config file
[x] Deploy the app with Gunicorn + Nginx: https://docs.gunicorn.org/en/stable/deploy.html
[x] Customize Bulma with unique theme colors (deferred)
[x] Use Django to package all static resources on deploy
[x] Create a custom User model: https://docs.djangoproject.com/en/3.0/topics/auth/customizing/#substituting-a-custom-user-model
[x] Get models into Django admin for easier add/delete/update of info
[x] Get basic FAQ page
[x] Send confirmation email once user signs up for mailing list. See here for details on which settings are required for mail.
[x] Enforce unique constraint on launch list signup; see this and this
[x] Basic about page
[x] Basic privacy policy