- Add homepage :-)
- Remote CAP_SETUID and CAP_SETGID from CapabilityBoundingSet: This is
nor needed, because the unit already sets User=irc and Group=irc.
- Add RestrictAddressFamilies, and restrict it to AF_INET and AF_INET6.
- Read in the Debian "default files", but note: only PARAMS is supported!
Don't run ngIRCd in forground mode but let it daemonize itself. This
enhances the log output of "systemctl status ngircd.service", because
now ngIRCd doesn't print out its PID and timestamp on each log message
which is redundant: it becomes logged by systemd/journald already.
