[PERF] See if we Can Remove allDataPoints from the View Model

[Daniel Marsh-Patrick]

With #76/#77, we've changed the way that we render indibvidual data points, as there's potential to reduce our overhead on the DOM elements we need to render in the barcode plot. We need the allDataPoints property for each category so that we can generate statistics, but keeping it in the view model (especially for large data sets) can add significant memory overhead to the view model in general. We should see if we can improve this side of things.