Quicksand - fix toggle behavior to work with quicksand

Summary:
Fixes T7919. This is a pretty generic toggle behavior. Make it quicksand ready by making it install only once and swallow the regular "click" event so the quicksand "click" event doesn't get funky with it.

Also fixes a bug in Quicksand that I discovered developing / testing this feature. We have to update the internal member variable to be better than 0 similarly to how id works. So do that.

Test Plan: went to phriction, toggled menu open, clicked home, clicked phriction and toggled menu again. Went back in history and noted menu was left to toggle state I previously had it. (currently a feature, not a bug)

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T7919

Differential Revision: https://secure.phabricator.com/D12708