Fix an issue where redirects would work incorrectly in Quicksand
Summary: Ref T7061. Quicksand still needs an ajax-style response here.
Test Plan: Clicked a file detail page (this redirects) with column open, ended up in the right place.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T7061
Differential Revision: https://secure.phabricator.com/D12206