Fix URLs in the webface.
Fix URLs in the webface.

And don't link if we don't have a URL.

paulproteus/livegrep,wfxiang08/livegrep,paulproteus/livegrep,paulproteus/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,lekkas/livegrep,paulproteus/livegrep,wfxiang08/livegrep,wfxiang08/livegrep,paulproteus/livegrep,paulproteus/livegrep,lekkas/livegrep,lekkas/livegrep,lekkas/livegrep,wfxiang08/livegrep,lekkas/livegrep,lekkas/livegrep