KAZOO-543: fix media path for empty MOH string
KAZOO-543: formatting update
KAZOO-543: if wrapup timer is 0, delay one millisecond
KAZOO-543: move queue fsm's collect timer to whapps_config
KAZOO-543: log some data about saved stats
KAZOO-543: formatting update
KAZOO-543: formatting
kAZOO-543: declare queue passively for message count
KAZOO-543: formatting
KAZOO-543: clean up presence probe responses for queues/agents
KAZOO-775: add new_channel event

Publish a "channel":"new" event on each channel create to the
callmgr exchange. Currently not namespaced (published to
"call.new_channel").
KAZOO-775: listen for new_channel events

Because agents know their endpoint usernames, distribute the new_channel
messages to those agents who care. Also, just publish the logout message
when agent fails to handle consecutive calls and let normal teardown occur.
KAZOO-775: cleanup logging