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
String displayLabel = module.getMessage( getDisplayNameID( ) );
		if ( StringUtil.isBlank( displayLabel ) )
		{
			displayLabel = getDisplayName( );
		}
		if ( StringUtil.isBlank( displayLabel ) )
		{
			displayLabel = getNameForDisplayLabel( );
		}
		if ( level == USER_LABEL )
		{
			return displayLabel;
		}
		MetaDataDictionary dictionary = MetaDataDictionary.getInstance( );
		IElementDefn elementDefn = dictionary.getElement( getElementName( ) );
		if ( StringUtil.isBlank( displayLabel ) )
		{
			displayLabel = elementDefn.getDisplayName( );
		}
		if ( StringUtil.isBlank( displayLabel ) )
		{
			displayLabel = elementDefn.getName( );
		}
		return displayLabel;
	}
	/**
	 * Returns the name of this element for display label.
	 * 
	 * @return the name of this element for display label.
	 */