Link checker: user interface and supporting fixes (part 2)

Link checker: user interface and supporting fixes (part 2)

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.
Corrections to the preceding commit
Vertical scrolling UI glitches fixed
Fix broken display of verification attempt in progress
Implement the "process immediately" switch, hitherto unhooked up
Verify-all now means all-matching-my-search-terms, not necessarily all-in-uvs
let's do filter sets a little more generalized-like
Permission fixing
Filter set loading works.
Filter loading: gracefully skip unknown fields, remove inital empty row
Saving filter sets
Fix filter dialog for pkey fields, scrolliness issue, saved filters issue
Pretty start page for staff client menu to land on
Staff client menu entry
User settings for saved columns
Session cloning, working and rather tested
show name of session on url select page ...
    ... and link back to that on review attempt page
IN / NOT IN for filter somewhat working, but doesn't save/load yet
Saving/loading filter rows for IN, NOT IN operators
Printing

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