Added User Pages, which you can now display galleries on. Also detected

Added User Pages, which you can now display galleries on.  Also detected
duplicate submissions.
Made an absolute mess of routes, but I think I've fixed them all now.
Removed all url.current() calls because they don't seem to work, though
I'm not sure if that's because I added explicit=True or not.  I'm wary
of them anyhow after reading
http://pylonsbook.com/en/1.0/urls-routing-and-dispatch.html#route-memory