Enhance logging #5
Description
We should stop logging the no-api-version warning, since we have a large deployed population of devices that fail to reference the version.
We aren't adding much info, if any, to the Heroku router's logs for entry POSTs. We can consider logging some info for source POSTs or GETs, in case we want to see user agent strings, for example.
The express logs reference the router's internal IP address rather than the IP address of the original client.