As an SD Admin, I want the ability to customize the Public Sign-up Form / Page

Problem Desription

To allow Service Desk Admin to customize the text / custom fields / links in the Public Sign-up Page/Email Form.
Different companies have different preference over what information is needed from the customer
A certain subset of users will inadvertently glance over the details and when/if that happens, there is no way to proactively prevent them from clicking the wrong link (restart sign up vs continue sign up).

Sample Email

Click the button below to confirm your email address and create your new account!

This email will expire 24 hours after it was sent. You can restart the sign up process here.

Continue sign up

Ideally, the continue sign up link would be first and foremost and the restart the sign up link would be smaller at the end of the message.