Added subdomain doppelganger feature. Lifted vhosts-defaults.lst from nmap.
BUG: ensure the global variables are used for safebrowsing rate limiting.
Code tidy-up. Changed use of dnspython's resolve function to prevent the local operating system DNS search suffixes from getting attempted too.
Fixed whois for IDNs
Added http link for domains which resolve to an IP without a subdomain
Fixed whois issue for domains which aren't IDN.
Added additional dots algorithm to doppelganger creation
Replaced nmap's subdomain list with one which has less license issues based on http://www.ethicalhack3r.co.uk/zone-transfers-on-the-alexa-top-1-million/