Facilitate email verification and password reset on the backend

[HuxleyBerry]

Here's a non-exhaustive list of things to be done:

• Create a django.contrib.auth.tokens.PasswordResetTokenGenerator instance
• Modify the user registration view so that users are not marked as active
• Write a view which takes an email address and sends an email containing a password verification link to that address, provided that the user corresponding to that address exists and isn't already active
• Write a view which takes a user id and a reset token, checks if that token is valid for the user, and if so marks the user as active.
• Write a view which takes an email address and sends an email containing a password reset link to that address, provided that the user corresponding to that address exists
• Write a view which takes a user id, a reset token, and a new password, checks if that token is valid for the user, and if so assigns the user the new password.

See the django docs for information on sending emails: https://docs.djangoproject.com/en/5.1/topics/email/. For the time being, I suggest using the console backend for testing purposes.

[github-actions]

Branch issue-119-Facilitate_email_verification_and_password_reset_on_the_backend created!