R1:a03527f44074

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