This commit’s parent introduces a Node-based way of managing front end assets.
Nothing else is needed in the app, specifically not Flask Assets. Flask itself
automatically routes requests for `domain.tld/static/*` to the files in
`app/static`.
This also removes all the Ruby stuff.
The post register endpoint will send a random 5 digit code via sms and another via email.
If either code fails to send, the user will not be created and the person can register again.
The codes are saved to the session cookie, and expire in 1 hour.
Another iteration of this story will save the codes to a database.
