* Removed legacy transports and templates code
* Add notification
* abstract LnmsCommand
* Only issue alerts "legacy" alerts to mail for default contacts, etc.
* Prevent no contacts error when default contact is not specified, or there are no contacts for other reasons.
* remove eval \o/
* Update notifications.rss
* Refactor alert transports to classes
* Fix linting
* Make Slack alert transport php 5.3 compatible
* Rename call method to deliverAlert for alert transport