Authentication server

[sebas5384]

The user wants to backup and sync their shells/hosts and he's key files, so he needs to identify him self.
All the data transfered must be encrypted all the time.

At first the user can login with a Google account and OpenID Auth.

[sebas5384]

We could use Auth0 which is free till 2k users, https://auth0.com/pricing

[sebas5384]

We could use https://github.com/mawie81/electron-oauth2 as a client to do the login.