Update comparison data in the cosmic star formation rate density plot

[EvgeniiChaikin]

This follows Joop's request on slack to

• change the label for Gruppioni+ 20 from "IR" to "FIR"
• omit all data from before 2016 except Bouwens+ 15

The updated plot will look as follows

[MatthieuSchaller]

Do we want to keep all the commented-out code then?

[EvgeniiChaikin]

Yes, I think we should keep this code because it includes all the necessary conversions.

For example, imagine, for some specific reason, one might want to re-create this plot with some older data on it.

[MatthieuSchaller]

Ok, you convinced me.