[bug 940805] Clean urls

This nixes all the cruft that can be in a url reducing it to a form
that's less likely to be holding private data.
[bug 932067] Include url domain on dashboard

This adds the url domain to the dashboard responses. This requires a
re-indexing because it uses a new column.
[bug 754615] Add url domain to atom feed

This adds the url domain to the atom feed.