Bug 190058 icon for aggregation type data items.
For aggregation type data items in cross tabs, we should show the icon instead of the sigma symbol. I am attaching the icon to replace it
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/figures/LabelFigure.java
private static final Dimension ZERO_DIMENSION = new Dimension();
	private TextFlow label;
	private FlowPage flowPage;
	private String display;
	private Dimension recommendSize;
	/**
	 * Creates a new LabelFigure with a default MarginBorder size 3 and a
	 * FlowPage containing a TextFlow with the style WORD_WRAP_SOFT.
	 */