A nice backend!! ;)

This provides a form that can be used to subscribe people to
CatFacts. It also provides an API endpoint, /subscribers
which returns an array of subscribers that need to be messaged.
This is for the Python script.

There's also the beginnings of a webpage. Currently it's just
static stuff, "Welcome to catfacts, etc.." sorta thing and the
subscribe page. Eventually it'll be an admin dashboard for
managing subscribers, etc.