I can undelete *all* of the filtered items

(User Story, Closed -> Duplicate, Priority: Critical, Test Status: No automated tests yet , Reported By Bad Link: Thing 3y284oe not found, )
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Summary: This is a follow-up to I can *programmatically* list deleted Things -- at the bottom of a filtered list of deleted Things, there should be an "Undelete All" button, which will go through that entire list and undelete all of them.
Not clear how best to implement this. Should we feed the underlying list of OIDs into the ad-hoc undeleter, or enhance the undelete operation to redo the QL operation? Probably the former.