Add a get-option to enable noscript view of a page

Contribute Feature
3

I changed the line to

def use_crawler_layout? 
  @use_crawler_layout ||= (has_escaped_fragment? || params.key?(:noscript) || CrawlerDetection.crawler?(request.user_agent))
end

And this seems to work, if I add ?noscript=1 to any site, I get the crawler-view, but the stylesheet is not included there, I guess there has to be changed somethhing in the layout too?