Adjustments to make deviceMeta line up with the new documentation

@kentquirk @jebeck 

These are the jellyfish changes to make jellyfish talk the adjusted `deviceMeta` object from https://github.com/tidepool-org/tidepool-org.github.io/pull/29

I want to merge both of these some time tomorrow, so please give them a once over when you get a chance.
I'm surprised to see a new moment dependency. Wasn't the idea to keep the only moment dependency in sundial (for the repos that use sundial, which eventually will be all, including tideline)?