update: backend language and order result page

app/Http/Middleware/Language.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Support\Facades\App;
+
+class Language
+{
+    public function handle($request, Closure $next)
+    {
+        if ($request->header('content-language')) {
+            App::setLocale($request->header('content-language'));
+        }
+        return $next($request);
+    }
+}