Bug 122850 Table/list should not be able to be inserted in Master Page mode.
Description: Table/list should not be able to be inserted in Master Page mode. Steps to reproduce: 1. New a report and transfer to Master Page mode. 2. New a datasource and dataset 3. Drag a list/table to page header/footer, bind it to dataset and drag some columns inside. 4. Save and preview Expected result: Insert list/table item in master page should be forbidden. Actual result: They are allowed and preview showed "undefine" in page
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
element.handle = null;
		element.baseId = NO_BASE_ID;
		element.propValues = new HashMap( );
		
		
		
		DesignElement current = this;
		Iterator iter = null;
		while ( current != null )
		{
			iter = current.propValues.keySet( ).iterator( );
			while ( iter.hasNext( ) )
			{
				String key = (String) iter.next( );
				if ( element.propValues.get( key ) != null )
					continue;
				PropertyDefn propDefn = getPropertyDefn( key );
				Object value = current.propValues.get( key );
				element.propValues.put( key, ModelUtil.copyValue( propDefn,
						value ) );
			}
			if ( !current.isVirtualElement( ) && current.userProperties != null )
			{
				if ( element.userProperties == null )
					element.userProperties = new LinkedHashMap( );
				iter = current.userProperties.keySet( ).iterator( );
				while ( iter.hasNext( ) )
				{
					Object key = iter.next( );
					if ( element.userProperties.get( key ) != null )