new sites fill user 1's email field with url instead of email address

Issue Summary

when you create a new site with aegir, it creates the admin user and fills the email field with client's site url instead of the client's email address. the problem with this is....i recently had a situation where aegir was sending blank welcome emails after the creation of sites. In order to login, normally you would go through the "forgot password" process & it would send the login link to the email address on the user's account....but since the email address field has the site's url instead...i wasnt able to login....so i had to edit the email field from the database....then try the process again.