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

Better test isolation.

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