squid.conf dns_nameservers 8.8.8.8

[WinH]

Hello,

In the squid.conf the dns_nameservers is set to 8.8.8.8 and 8.8.4.4.
Also when running the raptor install script, a local (bind) DNS server is installed.

My questions
1. Why is squid.conf set to 8.8.8.8, and not to 127.0.0.1 because there is a local DNS server installed that also forwards to 8.8.8.8?
2. What is function of installing the bind software because it does not seem to be used?