getting the paraz2 server host and port info from the HTTP request, and mirroring...

getting the paraz2 server host and port info from the HTTP request, and mirroring back to the web client in the headers
pazpar2-server-host
pazpar2-server-port
Notice these change according to the connection the client did made, so if a paraz2 is hidden behind firewalling and port-forwarding, the server host and port of the shielding firewall is reported back, and not the shielded host and port numbers.