Implement permission inheritance in log module

Quick-and-dirty matching of permissions when new log directories are
created. Currently gets tripped up by the umask with some perms.
Fix Azzurra NickServ auth

Azzurra uses an unusual IDENTIFY prompt. Check for it in addition to
the existing list of possibilities.
Merge pull request #399 from dgw/azzurra-nickserv

Fix Azzurra NickServ auth
ControlPanel: support network module manipulation

Fix #380
Merge commit 'refs/pull/396/head' of github.com:znc/znc
Fix error message for /znc addnetwork irc.network.net