Bug 136241 [regression]Preview template in web viewer and pdf didn't get correct effect.
Description: Preview template items in web viewer and pdf didn't get correct effect. Steps to reproduce: 1. Create template items. 2. Preview in Web Viewer and pdf. Expected result: Same effect as in html. Actual result: In web viewer, see only blank box. In pdf, blank page.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
/**
	 * Returns the value of an element reference property as an element. Returns
	 * null if either the property is unset, or the reference is unresolved.
	 * 
	 * @param module
	 *            the module
	 * @param propName
	 *            the name of the element reference property to get
	 * @return the element referenced by the property
	 */
	public DesignElement getReferenceProperty( Module module, String propName )
	{
		ElementRefValue ref = (ElementRefValue) getProperty( module, propName );
		if ( ref == null )
			return null;
		return ref.getElement( );
	}
	/**
	 * Returns whether this element has references. That is, whether any other
	 * elements reference this one using an element reference property. This
	 * query does not check for "extends" references.
	 * 
	 * @return whether other elements refer to this one
	 */
	public boolean hasReferences( )
	{
		return false;
	}
	/**
	 * Creates the Factory data structures for specialized property access. This