Bug 182050 CrossTab - Aggregations are too busy in Layout view
Please follow the mockup (attached) to display aggregations in layout view for the sake of simplicity. It supposes to be sigma sign and measure name only. User can view the aggregation expression by tooltip if he/she wants to. Currently, aggregation area look over crowded!!!
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/editors/editparts/CrosstabGraphicsFactory.java
{
	/**
	 * The singleton instance. 
	 */
	public static final CrosstabGraphicsFactory INSTANCEOF = new CrosstabGraphicsFactory( );
	/* (non-Javadoc)
	 * @see org.eclipse.gef.EditPartFactory#createEditPart(org.eclipse.gef.EditPart, java.lang.Object)
	 */
	public EditPart createEditPart( EditPart context, Object model )