Display unprocessed trips in the diary

Display unprocessed trips in the diary.
Most of the work was around converting the raw points into geojson and figuring out all the stupid edge cases. This requires significant re-work to make it pretty - dunno when I will ever have time to make it right.

The good part is that this eventually does open up the opportunity to return raw timeseries objects instead of a per-day geojson object from the server.

Screenshots are at #215