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
* 
	 * @param module
	 *            the root module of the element
	 * 
	 * @return true if it can be transformed, otherwise false.
	 */
	public boolean canTransformToTemplate( Module module )
	{
		if ( this instanceof TemplateElement || ( !canDrop( ) )
				|| ( isContainTamplateElement( ) ) )
			return false;
		IElementDefn templateReportItem = MetaDataDictionary.getInstance( )
				.getElement( ReportDesignConstants.TEMPLATE_REPORT_ITEM );
		IElementDefn templateDataSet = MetaDataDictionary.getInstance( )
				.getElement( ReportDesignConstants.TEMPLATE_DATA_SET );
		if ( getContainer( ) != null )
			return getContainer( ).canContain( module, getContainerSlot( ),
					templateReportItem )
					|| getContainer( ).canContain( module, getContainerSlot( ),
							templateDataSet );
		return true;
	}
	/**
	 * checks if the element contains any sub level element is a template.
	 * 
	 * @return true if contain template element, otherwise return false.
	 */
	private boolean isContainTamplateElement( )
	{
		int slotCount = getDefn( ).getSlotCount( );