added 2 new functions

added is_ip and is_fqdn for alt_name check
added alt_names for ssl vert
Update common.php
added alt_names

added alt_names for ssl server certificates.
fixed nsRevocationUrl

fixed nsRevocationUrl.
fixed Empty DNS Names Strings
Set default Charset
fix charset prob

fixed problems with some umlauts
fixed regex and config path
Merge pull request #6 from majestick/master

added alt_names feature for ssl certs