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https://stackoverflow.com/questions/36862479/python-login-form-with-javascript
https://community.jivesoftware.com/thread/273068
https://chase-seibert.github.io/blog/2011/03/04/facebook-authenticate-wo-the-javascript-sdk-python.html
https://realpython.com/token-based-authentication-with-flask/
https://realpython.com/handling-user-authentication-with-angular-and-flask/
https://pypi.org/project/django-secure-js-login/
https://firebase.google.com/docs/auth/web/custom-auth
https://medium.freecodecamp.org/user-authentication-in-django-bae3a387f77d
https://www.sitepoint.com/tutorial-build-a-react-js-application-with-user-login-and-authentication/
https://www.codementor.io/mayowa.a/how-to-build-a-simple-session-based-authentication-system-with-nodejs-from-scratch-6vn67mcy3
https://scotch.io/tutorials/build-and-understand-a-simple-nodejs-website-with-user-authentication
http://clintberry.com/2012/backbone-js-apps-authentication-tutorial/
https://blog.miguelgrinberg.com/post/restful-authentication-with-flask