Why are the files in ./templates/account/ needed?

Where do these files come from?

Are they really needed? Is there no sane default provided by allauth?

```
/templates/account
./templates/account/email.html
./templates/account/password_reset_from_key_done.html
./templates/account/password_set.html
./templates/account/password_reset.html
./templates/account/base.html
./templates/account/login.html
./templates/account/snippets
./templates/account/snippets/already_logged_in.html
./templates/account/email_confirm.html
./templates/account/password_reset_from_key.html
./templates/account/verification_sent.html
./templates/account/email
./templates/account/email/email_confirmation_message.txt
./templates/account/email/base_message.txt
./templates/account/email/password_reset_key_subject.txt
./templates/account/email/email_confirmation_signup_message.txt
./templates/account/email/email_confirmation_signup_subject.txt
./templates/account/email/password_reset_key_message.txt
./templates/account/email/email_confirmation_subject.txt
./templates/account/account_inactive.html
./templates/account/logout.html
./templates/account/password_reset_done.html
./templates/account/signup_closed.html
./templates/account/verified_email_required.html
./templates/account/messages
./templates/account/messages/cannot_delete_primary_email.txt
./templates/account/messages/logged_out.txt
./templates/account/messages/password_changed.txt
./templates/account/messages/password_set.txt
./templates/account/messages/email_confirmed.txt
./templates/account/messages/unverified_primary_email.txt
./templates/account/messages/primary_email_set.txt
./templates/account/messages/email_deleted.txt
./templates/account/messages/email_confirmation_sent.txt
./templates/account/messages/logged_in.txt
./templates/account/password_change.html
./templates/account/signup.html
```

Review the listed ./templates/account files, including base.html, login.html, signup.html, and the email and messages subdirectories, and trace how they relate to allauth. Document where these templates come from, which are required or overridden, and whether a default can be used instead.

Written by the indexing model from the issue text.