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/laravel/ui/auth-backend/RegistersUsers.php

@@ -1,68 +0,0 @@
-<?php
-
-namespace Illuminate\Foundation\Auth;
-
-use Illuminate\Auth\Events\Registered;
-use Illuminate\Http\JsonResponse;
-use Illuminate\Http\Request;
-use Illuminate\Support\Facades\Auth;
-
-trait RegistersUsers
-{
-    use RedirectsUsers;
-
-    /**
-     * Show the application registration form.
-     *
-     * @return \Illuminate\View\View
-     */
-    public function showRegistrationForm()
-    {
-        return view('auth.register');
-    }
-
-    /**
-     * Handle a registration request for the application.
-     *
-     * @param  \Illuminate\Http\Request  $request
-     * @return \Illuminate\Http\RedirectResponse|\Illuminate\Http\JsonResponse
-     */
-    public function register(Request $request)
-    {
-        $this->validator($request->all())->validate();
-
-        event(new Registered($user = $this->create($request->all())));
-
-        $this->guard()->login($user);
-
-        if ($response = $this->registered($request, $user)) {
-            return $response;
-        }
-
-        return $request->wantsJson()
-                    ? new JsonResponse([], 201)
-                    : redirect($this->redirectPath());
-    }
-
-    /**
-     * Get the guard to be used during registration.
-     *
-     * @return \Illuminate\Contracts\Auth\StatefulGuard
-     */
-    protected function guard()
-    {
-        return Auth::guard();
-    }
-
-    /**
-     * The user has been registered.
-     *
-     * @param  \Illuminate\Http\Request  $request
-     * @param  mixed  $user
-     * @return mixed
-     */
-    protected function registered(Request $request, $user)
-    {
-        //
-    }
-}