[IMP] web: add the detection of iPadOS

Before this commit, the iPad with iPadOS was not detected as
'isMobileDevice'.

Now the detection is more accurate.

addons/web/static/src/js/services/config.js

@@ -14,6 +14,11 @@ const bus = new Bus();
  * this file someday.
  */
 
+const maxTouchPoints = navigator.maxTouchPoints || 1;
+const isAndroid = /Android/i.test(navigator.userAgent);
+const isIOS = /(iPad|iPhone|iPod)/i.test(navigator.userAgent) || (navigator.platform === 'MacIntel' && maxTouchPoints > 1);
+const isOtherMobileDevice = /(webOS|BlackBerry|Windows Phone)/i.test(navigator.userAgent);
+
 var config = {
     device: {
         /**
@@ -52,13 +57,7 @@ var config = {
          *
          * @return {boolean}
          */
-        isMobileDevice: navigator.userAgent.match(/Android/i) ||
-            navigator.userAgent.match(/webOS/i) ||
-            navigator.userAgent.match(/iPhone/i) ||
-            navigator.userAgent.match(/iPad/i) ||
-            navigator.userAgent.match(/iPod/i) ||
-            navigator.userAgent.match(/BlackBerry/i) ||
-            navigator.userAgent.match(/Windows Phone/i),
+        isMobileDevice: isAndroid || isIOS || isOtherMobileDevice,
         /**
          * Mapping between the numbers 0,1,2,3,4,5,6 and some descriptions
          */