Add files necessary for production deployment

* Dockerfile, docker-compose template
* nginx config
* uwsgi config
* wait-for-postgres script
* requirements.txt
* Some other stuff

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

Pipfile

@@ -11,6 +11,8 @@ django-environ = "*"
 django-guardian = "*"
 django-colorfield = "*"
 django-minify-html = "*"
+psycopg2-binary = "*"
+uwsgi = "*"
 
 [dev-packages]
 mypy = "*"