001 Firebase
https://firebase.google.com/

002 Firebase-Rules
https://firebase.google.com/docs/rules

004 Firebase-Web-Setup
https://firebase.google.com/docs/web/setup

004 AngularFire
https://firebaseopensource.com/projects/angular/angularfire2/

006 AngularFire-Authentication
https://github.com/angular/angularfire/blob/master/docs/auth/getting-started.md

007 Authentication-SDK
https://firebase.google.com/docs/reference/js/firebase.auth.Auth

013 Create-Account-Function
https://firebase.google.com/docs/reference/js/auth#createuserwithemailandpassword

014 Firebase-Request-Auth
https://firebase.google.com/docs/reference/rules/rules.firestore.Request#auth

018 Async-Pipe
https://angular.io/api/common/AsyncPipe

019 Firebase-Installation
https://firebase.google.com/docs/web/setup

020 signInWithEmailAndPassword-Function
https://firebase.google.com/docs/reference/js/firebase.auth.Auth.html#signinwithemailandpassword

024 JWT
https://jwt.io/

024 Base64
https://www.base64decode.org/