XX-11486: obsolete sipxevent (event notifier) service should be removed

- remove event notifier dependency
XX-11238: Authentication Rules should not authenticate calls to registered users from an SBC or gateway

- add setting to disable / enable call auth to registered users from an SBC or gateway
Merge branch 'release-14.10' of github.com:SIPfoundry/sipxecs into release-14.10