`get_mail_account_exist` does not interpolate `reset_password_url`

[Marc-Andrieu]

On the one hand, the body of the function get_mail_account_exist does not interpolate this jinja variable reset_password_url.
This leads to a target="_blank" after compilation to HTML, which in turn leads to this funny situation on Zimbra: a link that re-opens Zimbra.

On the other hand, the get_mail_account_exist function does not take any arguments, so Hyperion can't pass the value of the URL to reset your password (and Hyperion does not try to do so).

[Marc-Andrieu]

That function https://github.com/aeecleclair/CalypSSO/blob/main/python/calypsso/mail.py#L63 @Luhmos

[Marc-Andrieu]

@Luhmos it's when u try to create an account with an email address which is already bound to an existing account.
This email address receives an email to tell you that someone (prolly you) tried to create an account with that mail, and it proposes you to reset your password just in case.
The link to this password reset page is broken (cf. screenshot above), that's the problem.