server.php: modify regex for server_msg_307 response
server.php: modify regex for server_msg_307 response

When performing a WHOIS, the IRC server used by TheAirlock outputs a
different string in the 307 message. We modify the preg_match
in the server_msg_307 function accordingly.

This fixes ticket #82, but leaves the issue with the NickServ
address (coldfront vs. theairlock) unaddressed.

hemberger/smr,smrealms/smr,hemberger/smr,smrealms/smr,hemberger/smr,smrealms/smr,hemberger/smr