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/service-contracts/ResetInterface.php

@@ -1,33 +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\Contracts\Service;
-
-/**
- * Provides a way to reset an object to its initial state.
- *
- * When calling the "reset()" method on an object, it should be put back to its
- * initial state. This usually means clearing any internal buffers and forwarding
- * the call to internal dependencies. All properties of the object should be put
- * back to the same state it had when it was first ready to use.
- *
- * This method could be called, for example, to recycle objects that are used as
- * services, so that they can be used to handle several requests in the same
- * process loop (note that we advise making your services stateless instead of
- * implementing this interface when possible.)
- */
-interface ResetInterface
-{
-    /**
-     * @return void
-     */
-    public function reset();
-}