Rename "blocked" to something more clear

[mdavis-xyz]

The domain whitelist in the config file is called "blocked".

Personally I find this a confusing name. My co-worker was also confused.
It sounds like this is a list of domains that we want to block, but it's not.
Or it could be a list of domains that should be sent direct and not through the tunnel.

I'm not sure what else to call it. whitelist, or proxy_whitelist, or domains_to_proxy, or just domains, or something like that?