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
xtab/org.eclipse.birt.report.item.crosstab.ui/src/org/eclipse/birt/report/item/crosstab/internal/ui/editors/editparts/MeasureAggregationEditPart.java
/*******************************************************************************
 * Copyright (c) 2004 Actuate Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *  Actuate Corporation  - initial API and implementation
 *******************************************************************************/
package org.eclipse.birt.report.item.crosstab.internal.ui.editors.editparts;
import org.eclipse.birt.core.exception.BirtException;
import org.eclipse.birt.report.data.adapter.api.DataRequestSession;
import org.eclipse.birt.report.data.adapter.api.DataSessionContext;
import org.eclipse.birt.report.designer.internal.ui.editors.schematic.editparts.DataEditPart;
import org.eclipse.birt.report.designer.util.DEUtil;
import org.eclipse.birt.report.model.api.ComputedColumnHandle;
import org.eclipse.birt.report.model.api.DataItemHandle;
/**
 *  The data item in the measure aggregation.
 */
public class MeasureAggregationEditPart extends DataEditPart