Bug 152834 support HTML description of the template
The template descrition is a fragment of HTML, use that fragment to render the template in HTML.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/presentation/LocalizedContentVisitor.java
processTemplateContent( foreignContent );
			return foreignContent;
		}
		
		if ( IForeignContent.EXTERNAL_TYPE.equals( rawFormat ) )
		{
			return processExtendedContent( foreignContent );
		}
		
		if ( IForeignContent.IMAGE_TYPE.equals( rawFormat ) )
		{
			if ( rawValue instanceof IImageContent )
			{
				IImageContent image = (IImageContent) rawValue;
				processImage( image );
				return image;
			}
			if ( rawValue instanceof byte[] )
			{
				IImageContent imageContent = reportContent
						.createImageContent( foreignContent );
				imageContent.setImageSource( IImageContent.IMAGE_EXPRESSION );
				imageContent.setData( (byte[]) rawValue );
				processImage( imageContent );
				return imageContent;
			}
		}
		
		if ( IForeignContent.TEXT_TYPE.equals( rawFormat ) )
		{