New /auth/facebook route for creating/logging in with existing facebook user id
Update user schema and facebook auth route
Fixed nested findOne of facebook.id in /auth/facebook route
After facebook login send a POST request back to the server with the facebook user object
Configurable facebook auth url
Send AuthResponse from FB in addition to profile
Add Facebook signature verification
Fixed facebook encoded signature verification
Refactored facebook auth on server-side
Refactored out JWT token creation into a separate function
Send JWT token as string instead of an object
Return token if existing facebook user already exists
Save current user via jwt token in facebook auth