Create comparison views in dataview for multiple substance record sets

[dgets]

The dataview app will be infinitely more useful if it has capability to graph different substance administrations in a way that lends itself to easy comparison. Side by side graphs would be great, if not a combined graph utilizing bars of different colors, or something of the sort. It'd almost be nice to find some line graphing utility in order to use a graph format that'll handle multiple specific data lines more easily, but that's shooting the moon at this point.

Ideally this would work with n substances, and not just two. Pretty sure that, at this point, that's going to require a lot more JavaScript than I'm capable of easily working with right now, though in a slightly convoluted fashion I could probably just pull it off with Django. We'll have to see what happens with this.