tools: support IPv6 in nfd-status-http-server

Change-Id: I40866b0caf25315123f0da5a3136b576ece19027
Refs: #1445
docs: Update of copyright and license statement in all .hpp and .cpp files

Change-Id: I4082db67f2390482615a780d91a513f09d57a9a4
Refs: #1266