Try to graph just the temperatures.

Limit how much data we store.
Remove envision.js graphing.

I haven't been able to get this to work well with live data, and
the select-range-to-examine thing isn't a great fit for this data.
Unsuccessful plotting experiment with rickshaw.js.
Remove plotting altogether.

Just do a plain table for now.
Don't log all listed elements.

Helps with layout problems since the list is so long.