Deploy Lobby Webapp for Sign Ups

I've finally managed to get the Lobby web application to the point where we can use it for user sign-ups + approvals. Next step will be the anonymous issue creation and commenting, but that is a secondary thing right now. It also depends on whether we do Discourse or not.

We need to figure out how and where to deploy this app. It can use a SQLite database or PostgreSQL. It's written in Django, but I have no experience with running Django apps with Apache. I assume it's a lot like with Nginx.

The code in https://gitlab.torproject.org/ahf/lobby works now and can be tested with ./manage.py runserver (test webserver) and by putting the right values in the lobby/settings.py file.