Merge pull request #2 from uVAdN2vUw2aMENSu19cY7ic24Gvp7Fd/master

Fix DNS Server (it was broken just after 0.8)
Thanks to uVAdN2vUw2aMENSu19cY7ic24Gvp7Fd.
Fix indentation
* Fix the DNS server so it resolves subdomains correctly and uses new API for map lookups
* implement getNS command
* remove old map lookup code
* add NS lookups to getIp4 and getIp6 commands