Database upgrade controller & view
On installation, also create service_posts table and set database version
Service drivers post to their service but are no longer responsible for adding their post to the Whiskers database. Instead they return the URL & let the calling function handle the database
To allow server to understand which service posts should be grouped, browser passes a timestamp & the authoritative post text back to the server with each message
Server-side routes incoming AJAX calls from browser to each appropriate service driver and also writes successfully posted posts to the Whiskers database
On history view, pull all authoritative posts & their associated service posts out of the database and display them nicely
Comment out debug