app_odoo_customize/static/src/js/app_window_title.js
odoo.define('app_system_name', function (require) {
"use strict";
var WebClient = require('web.WebClient');
WebClient.include({
init: function() {
this._super.apply(this, arguments);
this.set('title_part', {"zopenerp": document.title});
}
});
});