Merge branch 'dev' into 'next'

ajax/backend/update.php

bin/backend/controls/panels/Orders.js

phpstan.dist.neon

src/QUI/ERP/Order/AbstractOrder.php

src/QUI/ERP/Order/Basket/Basket.php

src/QUI/ERP/Order/Basket/Product.php

src/QUI/ERP/Order/EventHandling.php

src/QUI/ERP/Order/Factory.php

src/QUI/ERP/Order/Mail.php

src/QUI/ERP/Order/Order.php

src/QUI/ERP/Order/OrderInProcess.php

src/QUI/ERP/Order/OrderView.php