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/editparts/DataEditPart.java
super.refreshFigure( );
		( (LabelFigure) getFigure( ) ).setToolTipText( ( (DataItemHandle) getModel( ) ).getResultSetColumn( ) );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.LabelEditPart#getText()
	 */
	protected String getText( )
	{
		String text = ( (DataItemHandle) getModel( ) ).getResultSetColumn( );
		if ( text == null || text.length( ) == 0 )
		{
			text = FIGURE_DEFAULT_TEXT;
		}
		else
		{
			if ( text.length( ) > TRUNCATE_LENGTH )
			{
				text = text.substring( 0, TRUNCATE_LENGTH - 2 ) + ELLIPSIS;
			}
			text = "[" + text + "]"; 
		}
		if (hasBindingFunction( ))
		{
			text = PREFIX + text;
		}
		return text;
	}
	protected boolean hasBindingFunction()