Initial sketch of bug #282, aggregate cell data export.

I believe this mostly accomplishes the "hourly exports of changes to Cell table" issue, in very broad brush strokes. I haven't managed to test it against S3 live yet and I expect the fields will change some and possibly need preprocessing before export, but I'm posting this for feedback / review now.
Than ignore me. I just thought these looked the same based on memory. I should have checked the code. If they are different enough, keep them where they are now.