Add isMobile function

app/static/app/js/classes/Utils.js

@@ -103,6 +103,10 @@ export default {
       var sizes = ['bytes', 'Kb', 'Mb', 'Gb', 'Tb', 'Pb', 'Eb', 'Zb', 'Yb'];
       var i = Math.floor(Math.log(bytes) / Math.log(k));
       return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + ' ' + sizes[i];
+    },
+
+    isMobile: function(){
+      return navigator.userAgent.match(/(iPad)|(iPhone)|(iPod)|(android)|(webOS)/i);
     }
 };