rename: parsDataInt() -> parseDataFloat() null-value handling in parseDataFloat() (cfr http://www.highcharts.com/demo/area-missing)
rename: parsDataInt() -> parseDataFloat()
null-value handling in parseDataFloat() (cfr http://www.highcharts.com/demo/area-missing)

manueltimita/easychart,manueltimita/easychart,daemth/easychart,bestuurszaken/easychart,bestuurszaken/easychart