started verification review UI, also SCHEMA CHANGES

started verification review UI, also SCHEMA CHANGES

It just doesn't work for me to not have url_verify.url directly related
to url_verify.session.  When dealing with the "root" URL in a redirect chain,
you can get the related session through url_selector, but not when
you have any later URL in the chain.  The only way for IDL perms to work
would be to have a link to a view using a CTE to find the "root" URL.

That's too complex, so instead of that I've just added a session fkey on
url_verify.url.

Signed-off-by: Lebbeous Fogle-Weekley <lebbeous@esilibrary.com>