Installs event handler for "hidden" before actually triggering it
Installs event handler for "hidden" before actually triggering it

Even when 'hide' is fast, on('hidden') will be already there
powmedia/backbone.bootstrap-modal,tindustry/backbone.bootstrap-modal,squidsolutions/backbone.bootstrap-modal,lassecph/backbone.bootstrap-modal,tindustry/backbone.bootstrap-modal,Mediamorph/backbone.bootstrap-modal