CC-5709 / CC-5705 : Airtime Analyzer

* Finished the skeleton of the airtime_analyzer service.
* Basic round-robin, reliable AMQP messaging works.
* Using multiprocess arch so the daemon survives analyzer crashes and
  avoids failures propagating to other nodes.
* Basic metadata extractor using Mutagen is done.
* HTTP requests to the File API to are next to come...
CC-5709: Airtime Analyzer Queue

* Added StatusReporter class to make HTTP requests back to Airtime
* Handle even more errors now
* Added proper logging and log rotation
* Added --debug flag for increased logging.
CC-5709: Airtime Analyzer

* Basic HTTP reporting back to the File API works (PUT)
* Use the database table names as JSON field names.
* Fixed result returning bug in message_listener.py
* Fixed API key verification to adhere with the HTTP Basic Auth spec
CC-5709: Airtime Analyzer

* Fixed the /rest/media endpoint