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/psr/log/README.md

@@ -1,58 +0,0 @@
-PSR Log
-=======
-
-This repository holds all interfaces/classes/traits related to
-[PSR-3](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md).
-
-Note that this is not a logger of its own. It is merely an interface that
-describes a logger. See the specification for more details.
-
-Installation
-------------
-
-```bash
-composer require psr/log
-```
-
-Usage
------
-
-If you need a logger, you can use the interface like this:
-
-```php
-<?php
-
-use Psr\Log\LoggerInterface;
-
-class Foo
-{
-    private $logger;
-
-    public function __construct(LoggerInterface $logger = null)
-    {
-        $this->logger = $logger;
-    }
-
-    public function doSomething()
-    {
-        if ($this->logger) {
-            $this->logger->info('Doing work');
-        }
-           
-        try {
-            $this->doSomethingElse();
-        } catch (Exception $exception) {
-            $this->logger->error('Oh no!', array('exception' => $exception));
-        }
-
-        // do something useful
-    }
-}
-```
-
-You can then pick one of the implementations of the interface to get a logger.
-
-If you want to implement the interface, you can require this package and
-implement `Psr\Log\LoggerInterface` in your code. Please read the
-[specification text](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md)
-for details.