Move pie label tests to a different describe().
Move pie label tests to a different describe().

Better test isolation.

alyssaq/plottable,onaio/plottable,NextTuesday/plottable,softwords/plottable,iobeam/plottable,palantir/plottable,gdseller/plottable,gdseller/plottable,alyssaq/plottable,onaio/plottable,NextTuesday/plottable,alyssaq/plottable,jacqt/plottable,iobeam/plottable,gdseller/plottable,jacqt/plottable,softwords/plottable,softwords/plottable,palantir/plottable,danmane/plottable,RobertoMalatesta/plottable,iobeam/plottable,onaio/plottable,jacqt/plottable,RobertoMalatesta/plottable,RobertoMalatesta/plottable,NextTuesday/plottable,danmane/plottable,palantir/plottable,danmane/plottable,palantir/plottable