write explanatory text as we build DNS zones so we can help the user manage DNS off of the box
run management/dns_update.py from the console to dump the DNS records, with explanations, in case the user wants to host DNS off of the box
don't create a www. subdomain on any domains that are themselves subdomains within a zone, i.e. don't create www.PUBLIC_HOSTNAME if PUBLIC_HOSTNAME is a subdomain of another domain, which is what we normally recommend