static/admin/js/jquery.init.js

/*global jQuery:false*/
'use strict';
/* Puts the included jQuery into our own namespace using noConflict and passing
 * it 'true'. This ensures that the included jQuery doesn't pollute the global
 * namespace (i.e. this preserves pre-existing values for both window.$ and
 * window.jQuery).
 */
window.django = {jQuery: jQuery.noConflict(true)};