Expose FlightHistory as a http service

Expose FlightHistory as a http service

usage:
GET http://localhost:8080/flighthistory/track.json
retrieves track as JSON data
{
  flightHistory: [
    {
      latitude: (number),
      longitude: (number),
      altitude: (number)
    }
  ]
}

GET http://localhost:8080/flighthistory/track.kml
retrieves track as KML path
optional request parameter:
LineColor=(hex encoded rgba color)
LineWidth=(line width in pixel)
PolyColor=(hex encoded rgba color)
interval=(number of seconds to auto-refresh)