Password reset

[BDonat05]

Add an email client to the backend and implement a secure password reset with it

[BDonat05]

Due to unnecessary complexity, this won't be implemented

[BDonat05]

I'm reopening the issue due to team ego. We're dropping the idea of a mail system, due to pretty much inaccessible free SMTP servers, instead, we're going to implement a security code system (much like Discord) to handle this functionality.