Switch opendns to Use grequests for opendns, score opendns & VT results better

Switch opendns to Use grequests for opendns, score opendns & VT results better

Switch opendns to use requests and remove the dependency on investigate module.
* This allows for a higher throughput of calls to opendns but respects a 30 calls per second rate limit.

Improve scoring constants for OpenDNS. I’m still not too happy with these.

Score VT results. This adds initial scoring for VT results but probably includes too many false positive domains.