Revert "Stop using user agent to detect mobile devices. Use a media query and yepnope to load the appropriate css and customizations."

vendor/assets/javascripts/browser-update.js.erb

@@ -5,9 +5,7 @@
 
 var $buo = function() {
 
-  var badAndroid = false,
-      haveJquery = (typeof($) !== 'undefined'),
-      ua = null;
+  var badAndroid = false, ua = null;
 
   // Sometimes we have to resort to parsing the user agent string. :(
   if (navigator && navigator.userAgent) {
@@ -55,11 +53,6 @@ var $buo = function() {
   // shift the body down to make room for our notification div
   document.body.style.marginTop = (div.clientHeight) + "px";
 
-  if (!haveJquery) {
-    var h = document.getElementsByTagName('html')[0];
-    h.className = h.className.replace(/(\s|^)css-loading(\s|$)/g, ' ');
-  }
-
 };
 
 $bu=$buo();