/**
     * Register and deregister scripts and stylesheets.
     */
    function theme_setup() {
        wp_deregister_script( 'jquery' ); // Deregister the jquery version bundled with wordpress

        wp_register_script( 'jquery', 'https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.4/jquery.min.js', array(), '2.2.4' );
        wp_register_script( 'jquerydateformat', 'https://cdnjs.cloudflare.com/ajax/libs/jquery-dateFormat/1.0/jquery.dateFormat.min.js', array('jquery'), '2.2.4' );
        wp_register_script( 'app', get_template_directory_uri() . '/js/app.js', array('jquery'), '1.0' );

        wp_enqueue_script( array(
      'jquery',
      'jquerydateformat',
            'app'
        ) );

        wp_register_style( 'fontawesome', 'https://maxcdn.bootstrapcdn.com/font-awesome/4.4.0/css/font-awesome.min.css', '4.4.0' );
        wp_register_style( 'fonts', 'https://fonts.googleapis.com/css?family=Oswald|Open+Sans:400,400italic,700,700italic' );
        wp_register_style( 'app', get_stylesheet_directory_uri() . '/css/app.css', '1.0' );

        wp_enqueue_style( array(
            'fonts',
            'fontawesome',
            'app',
        ) );
    }