Refs #4041, make all DataTableVisualizations derive from Piwik\View.

core/DataTableVisualization.php

core/View.php

core/Visualization/Graph.php

plugins/CoreHome/templates/_dataTable.twig

plugins/CoreVisualizations/JqplotDataGenerator/Chart.php

plugins/CoreVisualizations/Visualizations/Cloud.php

plugins/CoreVisualizations/Visualizations/HtmlTable.php

plugins/CoreVisualizations/Visualizations/JqplotGraph.php

...ins/CoreVisualizations/Visualizations/JqplotGraph/Pie.php

...CoreVisualizations/templates/_dataTableViz_htmlTable.twig

...reVisualizations/templates/_dataTableViz_jqplotGraph.twig

plugins/Live/VisitorLog.php

plugins/TreemapVisualization/Treemap.php

...TreemapVisualization/templates/_dataTableViz_treemap.twig