Replace deprecated date.toGMTString with date.toUTCString in Magento JS lib

Author: schmengler

lib/web/mage/adminhtml/tools.js

@@ -248,7 +248,7 @@ var Cookie = {
         if (cookieLifeTime) {
             var date = new Date();
             date.setTime(date.getTime()+(cookieLifeTime*1000));
-            expires = '; expires='+date.toGMTString();
+            expires = '; expires='+date.toUTCString();
         }
         var urlPath = '/' + BASE_URL.split('/').slice(3).join('/'); // Get relative path
         document.cookie = escape(cookieName) + "=" + escape(cookieValue) + expires + "; path=" + urlPath;

lib/web/mage/cookies.js

@@ -78,7 +78,7 @@
             secure = options.secure;
 
             document.cookie = name + '=' + encodeURIComponent(value) +
-                (expires ? '; expires=' + expires.toGMTString() :  '') +
+                (expires ? '; expires=' + expires.toUTCString() :  '') +
                 (path ? '; path=' + path : '') +
                 (domain ? '; domain=' + domain : '') +
                 (secure ? '; secure' : '');