Bug 136045 the display name does not work
Description: the display name does not work Steps to reproduce: 1. new a datasource and a dataset 2. In the window 'Edit dataset'. click the tab 'Output columns' 3. set a display name on a column Actual result: The display name does not work, however, it is still the column name
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/dnd/InsertInLayoutUtil.java
if ( handle instanceof GroupHandle )
			{
				return (GroupHandle) handle;
			}
			return null;
		}
		protected ReportItemHandle getGroupContainer( Object target )
		{
			GroupHandle group = getGroupHandle( target );
			if ( group != null
					&& group.getContainer( ) instanceof ReportItemHandle )
				return (ReportItemHandle) group.getContainer( );
			return null;
		}
	}
	/**
	 * Creates a object to insert.
	 * 
	 * @param insertObj
	 *            object insert to layout
	 * @param target
	 *            insert target, like cell or ListBandProxy
	 * @param targetParent
	 *            insert target's non-dummy container, like table or list
	 * @return new object in layout
	 * @throws SemanticException
	 */
	public static DesignElementHandle performInsert( Object insertObj,
			Object target, Object targetParent ) throws SemanticException
	{