Ext.Loader.setConfig({
    disableCaching: false
});

disableCaching: (/[?&](?:cache|disableCacheBuster)b/i.test(location.search) ||
    !(/http[s]?:/i.test(location.href)) ||
    /(^|[ ;])ext-cache=1/.test(doc.cookie)) ? false :
    true,