Add your js and css files to a Prestashop theme

When you make a template in Prestashop and you want add css and js files, maybe this files don't load.

First add js and css files in themes/yourtheme/css (or js)

Next go to /override/classes/controller/FrontController.php and replace:

<?php

    class FrontController extends FrontControllerCore
    {

    }

With this:

<?php

class FrontController extends FrontControllerCore
{
    public function setMedia()
    {
        parent::setMedia(); // CSS files
        Tools::addJS(_THEME_JS_DIR_.'your_js.js');
    }
}