Report notification history from our alarms.
RAX_REGION, not hardcoded IAD.
Merge pull request #702 from rackerlabs/histmon

Report notification history from our alarms.
Merge branch 'dev' of https://github.com/rackerlabs/developer.rackspace.com into dev
Merge branch 'dev' of github.com:gecampbell/developer.rackspace.com into dev