Added langs array and fix update lang message

src/Http/Controllers/DashSettingsController.php

@@ -6,6 +6,7 @@ use CachetHQ\Cachet\Models\Setting;
 use Exception;
 use GrahamCampbell\Binput\Facades\Binput;
 use Illuminate\Routing\Controller;
+use Illuminate\Support\Facades\Lang;
 use Illuminate\Support\Facades\Redirect;
 use Illuminate\Support\Facades\View;
 
@@ -168,6 +169,8 @@ class DashSettingsController extends Controller
             return Redirect::back()->with('errors', trans('dashboard.settings.edit.failure'));
         }
 
+        Lang::setLocale(Binput::get('app_locale'));
+
         return Redirect::back()->with('success', trans('dashboard.settings.edit.success'));
     }
 }