updated signup, login and added pwreset API

[to-sta]

Contributor checklist

• This pull request is on a separate branch and not the main branch

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Description

I made some changes to the account related API:

• added password reset endpoint
• changed login to accept either username or email
• added email settings to .env.dev and django
• changed signup to work with either username or username and email
  • if email is used than a email address confirmation mail will be send

The email backend settings is only for development.

I have done initial manual testing, but the automated tests for login and signup need to be adjusted. Also password reset tests need to be added.

Related issue

• API endpoints for accounts. Login, Update password, forgot password, #719

[github-actions]

Thank you for the pull request!

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Maintainer checklist

• The commit messages for the remote branch should be checked to make sure the contributor's email is set up correctly so that they receive credit for their contribution

  • The contributor's name and icon in remote commits should be the same as what appears in the PR
  • If there's a mismatch, the contributor needs to make sure that the email they use for GitHub matches what they have for git config user.email in their local activist repo

• The TypeScript and formatting workflows within the PR checks do not indicate new errors in the files changed

• The Playwright end to end and Zap penetration tests have been ran and are passing (if necessary)

• The CHANGELOG has been updated with a description of the changes for the upcoming release and the corresponding issue (if necessary)

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[andrewtavis]

We could do "If you did not request a password reset, then it's safe to ignore this email."

[andrewtavis]

Thanks for all the changes here, @to-sta! Made #898 as discussed :)