R1:12a872678310

Fix an issue where the first click on the profile menu collapse link could be swallowed

Summary: `alterClass()` is strict about true/false but we set 0/1 elsewhere.

Test Plan: Collapsed/expanded menu, reloaded expanded menu, clicked collapse, got immediate collapse.

Reviewers: chad

Reviewed By: chad

Differential Revision: https://secure.phabricator.com/D15087