Update the app to Laravel 5.5

Squashed commit of the following:

commit 070f46bbacd91855730d467cc2806183441791ae
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Mon Sep 4 18:06:04 2017 +0100

    Now we now how the laravel IoC conatiner works, no need to be newing class dependencies

commit 57eeacdef178532a681f774f8c6738950d40c964
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Mon Sep 4 17:59:28 2017 +0100

    Get json test working again

commit 81c3cfc9b432241d8a4df7f1e0511a50ea4f9b90
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Mon Sep 4 14:38:10 2017 +0100

    Can’t use RefreshDatabase yet

commit 4ba5ff724d50ca86b3fa90c7bb4e71ad9e4dad79
Author: Jonny Barnes <jonny@jonnybarnes.uk>
Date:   Mon Sep 4 14:10:33 2017 +0100

    Initial attempt at updating to Laravel 5.5

app/Http/Middleware/EncryptCookies.php

@@ -2,9 +2,9 @@
 
 namespace App\Http\Middleware;
 
-use Illuminate\Cookie\Middleware\EncryptCookies as BaseEncrypter;
+use Illuminate\Cookie\Middleware\EncryptCookies as Middleware;
 
-class EncryptCookies extends BaseEncrypter
+class EncryptCookies extends Middleware
 {
     /**
      * The names of the cookies that should not be encrypted.

app/Http/Middleware/TrimStrings.php

@@ -2,9 +2,9 @@
 
 namespace App\Http\Middleware;
 
-use Illuminate\Foundation\Http\Middleware\TrimStrings as BaseTrimmer;
+use Illuminate\Foundation\Http\Middleware\TrimStrings as Middleware;
 
-class TrimStrings extends BaseTrimmer
+class TrimStrings extends Middleware
 {
     /**
      * The names of the attributes that should not be trimmed.

app/Http/Middleware/TrustProxies.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Illuminate\Http\Request;
+use Fideloper\Proxy\TrustProxies as Middleware;
+
+class TrustProxies extends Middleware
+{
+    /**
+     * The trusted proxies for this application.
+     *
+     * @var array
+     */
+    protected $proxies;
+
+    /**
+     * The current proxy header mappings.
+     *
+     * @var array
+     */
+    protected $headers = [
+        Request::HEADER_FORWARDED => 'FORWARDED',
+        Request::HEADER_X_FORWARDED_FOR => 'X_FORWARDED_FOR',
+        Request::HEADER_X_FORWARDED_HOST => 'X_FORWARDED_HOST',
+        Request::HEADER_X_FORWARDED_PORT => 'X_FORWARDED_PORT',
+        Request::HEADER_X_FORWARDED_PROTO => 'X_FORWARDED_PROTO',
+    ];
+}

app/Http/Middleware/VerifyCsrfToken.php

@@ -2,9 +2,9 @@
 
 namespace App\Http\Middleware;
 
-use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as BaseVerifier;
+use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as Middleware;
 
-class VerifyCsrfToken extends BaseVerifier
+class VerifyCsrfToken extends Middleware
 {
     /**
      * The URIs that should be excluded from CSRF verification.