Added URL handler to serve static QC_reports files

New URL rewriting to allow the `qc_report` files that guillermo has copied across to be visible as static files in the browser. Now that I can see them, I can start to write the QC-tool which will build the URLs to load them.
If you are trying to be able to tell which url got in your handler, you might be interedted by the reverse_url function, that allows you to link from a named handler to its url anywhere in the tornado app. 
http://tornado.readthedocs.org/en/latest/web.html?highlight=reverse_url#tornado.web.Application.reverse_url

The downside is that you have to give a namespace to your handler.