cs fixes, bug fixes, code coverage

Models/sales_price_names.php

@@ -1,18 +0,0 @@
-<?php
-/**
- * Orange Management
- *
- * PHP Version 8.0
- *
- * @package   Modules\Sales\Models
- * @copyright Dennis Eichhorn
- * @license   OMS License 1.0
- * @version   1.0.0
- * @link      https://orange-management.org
- */
-declare(strict_types=1);
-
-$SalesPriceNames = [
-    0 => 'DefaultInternational',
-    1 => 'DefaultNational',
-];