Fix email rendering and on_after_reset_password

[edulauer]

• Fix HTML rendering for email template
• Split email configuration into new file
• Add route to function on_after_reset_password

[edulauer]

stand that "html=body" has fixed the html format problem when sending email, right? Good idea to move email configuration to other file. Thanks!

Yes, exactly

[edulauer]

Were no changes made in the tests for this?

No. In this pull request we didn't predict tests for email sending. For sure it's a good idea to implement it.

[edulauer]

I'm ok with doing it later. It was not being tested before, anyway.

Ok, agree