The format of the url field in the query hyperdb item
changed in 0.6.0 from earlier versions. 0.5.x at least starts
the url field with a '?'. This is no longer supported with the
new search code.

Upgraders need to remove the ? from the front of the query url's
otherwise they won't be properly edited.

Also if people have changed the page.html page, they will need
to make sure to put the ? into the code that iterates over
the user's queries otherwise they will get invalid URL's.

-- rouilj