1.9+fixes

Fix logging when identifying with an SSL certificate fingerprint.
Stop requesting identification when changing nicks to a registered nick, and the current client certificate fingerprint matches one on the nickname's list.
Fix kill and killquick default expiry times.
ns_access and ns_cert: Fix accessmax defaults, also state in the config that 0 is not a valid value.
Fix some typos and touch up the configs a little.