Revert "spiked in custom passwordless auth backend"

.gitignore

accounts/__init__.py

accounts/admin.py

accounts/apps.py

accounts/authentication.py

accounts/migrations/__init__.py

accounts/models.py

accounts/templates/login_email_sent.html

accounts/tests.py

accounts/urls.py

accounts/views.py

lists/templates/base.html

requirements.txt

superlists/settings.py

superlists/urls.py