GeoIp location

[ptesavol]

• Add geoip-location package that can map an ip address to latitude and longitude using MaxMind's GeoLite City database

• If "geoIpDatabaseFolder" config variable is given to DhtNode, use geoip-location package server-side in DhtNode's ConnectivityRequest handler to add latitude and longitude to each ConnectivityReply

• Add function to cdn-location package for mapping coordinates to a local region number

• In DHTNode client-side, calculate local region number based on the latitude and longitude contained in ConnectivityReply. If ConnectivityReply does not contain latitude and longitude, fallback to using cdn-location.

• Take geoip-location server into use in Broker

[juslesan]

Should add the geoip-location package to the release.sh file