Login method

[Niels-Be]

We need some kind of login method.

My ideas:
Either integrate with an OAuth provider
or store a token in localStorage that manually can be exchanged.

[Peter42]

As we're already using Firebase, we could use it's Auth capabilities: https://github.com/firebase/firebaseui-web
It supports Google, Facebook,
Twitter, Github, 'Email and password' and custom OAuth.

But I haven't looked at it in detail yet.

[Niels-Be]

Using anonymous firebase login for now

[bantu]

Initially I was considering using the existing Single Sign On Certificate Infrastructure. Hardware devices (https://github.com/WaeCo/Coffee-light/tree/master/hardware) probably can not use that, though.