update nightscout web monitor

Howdy the Nightscout contributors have updated the cgm-remote-monitor. This "pull request" should allow you to confirm through Github that you'd like to pull our updates into your fork.

To do this, follow the pull request link in the email, and find big green merge button. Shortly after confirming that you'd like to pull in our updates, Azure management portal should show a new deployment. After ten minutes or so, your Azure website should update itself automatically.


P.S. The removal of all `audio.load( )`s helps network traffic even more than caching. :smile_cat: