More flexible product list / detail view on CMS

This would allow us to be incredibly flexible in offering styling solutions particularly to the prod detail page (and not mess about with javascript).  We also have a case (Hart Wholsesale) whereby the extended description contains line feeds but the plugin output is ignoring them/stripping them out.  These line feeds are added using the sys option for breaking down exchequer memos into individual lines.  I think we could handle this with an XSLT using disable output escaping.