Improved touch detect

Closes #792

app/js/lib/config.js

@@ -42,10 +42,12 @@ Config.Navigator = {
         (navigator.userAgent || '').toLowerCase().indexOf('mac') != -1,
   retina: window.devicePixelRatio > 1,
   ffos: navigator.userAgent.search(/mobi.+Gecko/i) != -1,
-  touch: screen.width <= 768,
+  touch: true,//screen.width <= 768 || ('ontouchstart' in window) || window.DocumentTouch && document instanceof DocumentTouch,
   mobile: screen.width && screen.width < 480 || navigator.userAgent.search(/iOS|iPhone OS|Android|BlackBerry|BB10|Series ?[64]0|J2ME|MIDP|opera mini|opera mobi|mobi.+Gecko|Windows Phone/i) != -1
 };
 
+// Touch detect: https://github.com/Modernizr/Modernizr/blob/master/feature-detects/touchevents.js
+
 Config.I18n = {
   locale: 'en-us',
   supported: [