Bug 119566 Support template items in page header/footer
Currently you can't create template report items inside a page header/footer. This should be fixed.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
{
			return null;
		}
		String slotSelector = slotDefn.getSelector( );
		if ( StringUtil.isBlank( slotSelector ) )
		{
			return null;
		}
		return slotSelector;
	}
	/**
	 * Returns property value with predefined style.
	 * 
	 * @param module
	 *            module
	 * @param prop
	 *            definition of property to get
	 * @param selector
	 *            predefined style
	 * @return The property value, or null if no value is set.
	 */
	public Object getPropertyFromSelector( Module module,
			ElementPropertyDefn prop, String selector )
	{
		assert module != null;
		if ( selector == null )
			return null;
		
		StyleElement style = module.findStyle( selector );
		if ( style != null )