nl_tokens: Add unique identifier for each chart
pl_tokens: function addIdentifier ( ) { $scope . dataAttributeChartID = 'chartid' + Math . floor ( Math . random ( ) * 1000000001 ) ; angular . <mask> ( $element ) . attr ( 'id' , $scope . dataAttributeChartID ) ; configuration . bindto = '#' + $scope . dataAttributeChartID ; }