enhance: show fewer decimal places inside bars
enhance: show fewer decimal places inside bars

Basically, this makes us show 2 significant digits, or no decimal places if the number
is big enough already.

OurWorldInData/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,owid/owid-grapher,owid/owid-grapher,OurWorldInData/owid-grapher,owid/owid-grapher,owid/owid-grapher,OurWorldInData/owid-grapher,OurWorldInData/owid-grapher