Import latest app updates from streamline

An updated set of source files and initialization was provided by streamline to
address issues observed during initial testing. These files have been updated in
order to generate a new set of app images.

docker/streamline-src/vendor/symfony/http-kernel/Controller/ControllerReference.php

@@ -1,44 +0,0 @@
-<?php
-
-/*
- * This file is part of the Symfony package.
- *
- * (c) Fabien Potencier <fabien@symfony.com>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Symfony\Component\HttpKernel\Controller;
-
-use Symfony\Component\HttpKernel\Fragment\FragmentRendererInterface;
-
-/**
- * Acts as a marker and a data holder for a Controller.
- *
- * Some methods in Symfony accept both a URI (as a string) or a controller as
- * an argument. In the latter case, instead of passing an array representing
- * the controller, you can use an instance of this class.
- *
- * @author Fabien Potencier <fabien@symfony.com>
- *
- * @see FragmentRendererInterface
- */
-class ControllerReference
-{
-    public $controller;
-    public $attributes = [];
-    public $query = [];
-
-    /**
-     * @param string $controller The controller name
-     * @param array  $attributes An array of parameters to add to the Request attributes
-     * @param array  $query      An array of parameters to add to the Request query string
-     */
-    public function __construct(string $controller, array $attributes = [], array $query = [])
-    {
-        $this->controller = $controller;
-        $this->attributes = $attributes;
-        $this->query = $query;
-    }
-}