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/content/impl/ForeignContent.java
{
	protected String rawType;
	protected Object rawValue;
	
	protected String altText;
	protected String altTextKey;
	public int getContentType( )
	{
		return FOREIGN_CONTENT;
	}
	public ForeignContent( ReportContent report )
	{
		super( report );
	}
	public ForeignContent( IContent content )