Add count property for QBoxPlotSeries...
Add count property for QBoxPlotSeries
Changed set count to property for QBoxPlotSeries.
Task-number: QTRD-2504
Change-Id: Id65e0b2b6e43b3a6330fbb21c66e1cfa4d0db3d2
Reviewed-by: Miikka Heikkinen <miikka.heikkinen@digia.com>