* /api endpoints only allows requests with application/json Content-Type
Otherwise sends 406 Unacceptable
* Uses CSRF token
The CSRF token is sent as the cookie 'XSRF-TOKEN' on all HTML page
requests. This token is picked up automatically by axios
and sent to the API with all requests as an 'X-XSRF-TOKEN' header.
The middleware runs on all routes and verifies that the token matches
what's stored in the session.
Andrew Nicolaou