KAZOO-543: publish channel_destroy events
KAZOO-543: pretty print date from timestamp
KAZOO-543: update store media proxy to use new cowboy callbacks
KAZOO-543: publish to routing key with callid
KAZOO-543: encode the call id for the routing key
KAZOO-543: AMQP updates to agents

Remove need to listen for route_req (use new_channel instead)
Agents listen for destroy_channel events when on calls
KAZOO-543: init the acdc db for an account
KAZOO-543: add maintenance function for agent statuses by account
KAZOO-543: update agent status in ets if it exists already
KAZOO-543: listen for destroy_channel events, cleanup merging of db and ets statuses