Back to Authors and Users link redirects to nowhere from a paginated user-edit screen

[linuxologos]

Testing against 3.1-RC2-17283.

Go to Users and go to any page other than the first one (the screen has to be paginated). Edit a User at that page and save. The Back to Authors and Users link redirects to a page just showing "-1". The problem is quite obvious even from the browser's address bar, which reveals the strange value for wp_http_referer (it must be related to ajaxified screens).

Screens affected:

• site admin users
• net admin users
• net admin site-users

This is happening because the referrer is changed to admin-ajax.php with the JS pagination/search. We'll need to fix this for all list tables.

It should be a simple matter of passing _wp_http_referrer to the 'fetch-list' ajax action.

The problem was that these screens used 'wp_http_referrer' instead of '_wp_http_referrer'.

PeteMall said this doesn't work in all cases; he'll work through it tomorrow. Something about paging.

Fixed ajax search query vars.

Closing this as invalid because of #16262. See #16275 for a related no-js bug.