Update codebase to L5.4 (#367)

app/Http/Middleware/LanguageMiddleware.php

@@ -44,7 +44,7 @@ class LanguageMiddleware
         if (Session::has('applocale')) {
             App::setLocale(Session::get('applocale'));
         } elseif (Auth::check() && isset(Auth::user()->language)) {
-            Session::set('applocale', Auth::user()->language);
+            Session::put('applocale', Auth::user()->language);
             App::setLocale(Auth::user()->language);
         } else {
             App::setLocale(Settings::get('default_language', 'en'));

app/Http/Middleware/RedirectIfAuthenticated.php

@@ -18,7 +18,7 @@ class RedirectIfAuthenticated
     public function handle($request, Closure $next, $guard = null)
     {
         if (Auth::guard($guard)->check()) {
-            return redirect('/');
+            return redirect(route('index'));
         }
 
         return $next($request);

app/Http/Middleware/TrimStrings.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Pterodactyl\Http\Middleware;
+
+use Illuminate\Foundation\Http\Middleware\TrimStrings as BaseTrimmer;
+
+class TrimStrings extends BaseTrimmer
+{
+    /**
+     * The names of the attributes that should not be trimmed.
+     *
+     * @var array
+     */
+    protected $except = [
+        'password',
+        'password_confirmation',
+    ];
+}