VisualizationPanel is responsible for visualizing an array of survey questions
constructor parameters: questions - an array of survey questions to visualize, data - an array of answers in format of survey result, options - object with the following options, elements - list of visual element descriptions
options: allowDynamicLayout - set it to false to disable items drag/drop reordering and dynamic layouting, labelTruncateLength - the length of the label where the truncation starts. Set to -1 to disable truncate. Default is 27. allowHideQuestions - set it to false to deny user to hide/show individual questions, allowMakeQuestionsPrivate - set it to true to allow make elements private/public also see persmissions property, seriesValues - an array of series values in data to group data by series, seriesLabels - labels for series to display, if not passed the seriesValues are used as labels, survey - pass survey instance to use localses from the survey JSON, dataProvider - dataProvider for this visualizer, layoutEngine - layout engine to be used for layouting inner visualizers