Consider attaching the ERB template to each dataset

[ldionne]

It might be useful to be able to look at the ERB template that was used to generate a dataset. For example, I could imagine hovering the legend on the chart and have the ability to see the ERB template that generated the corresponding curve.

While it just looks like a shiny feature, I would find it useful to differentiate between subtle variations of the same benchmarks when I'm hacking around.

[ldionne]

We could also attach the actual file generated for each data point, but that would most likely be way to huge.