This template for Qlik Sense 2.x includes Bootstrap and an off-canvas menu, good for placing a filter pane, among other things.
Demo at http://webapps.qlik.com/offcanvas-template-demo/offcanvasTemplateDemo.html
Installation & Use
Qlik Sense Desktop - Simply take this folder and add it to C:\Users[YOUR USER NAME]\Documents\Qlik\Sense\Extensions\Templates. Once you do this you should see the new template appear in the dropdown list after clicking the "Create New" button in the dev hub.