refactor: code performance

ajax/money/validatePrice.php

ajax/settings/numberRanges/list.php

ajax/settings/numberRanges/set.php

ajax/settings/validateVat.php

src/QUI/ERP/Accounting/Article.php

src/QUI/ERP/Accounting/ArticleDiscount.php

src/QUI/ERP/Accounting/ArticleList.php

src/QUI/ERP/Accounting/ArticleListUnique.php

src/QUI/ERP/Accounting/ArticleView.php

src/QUI/ERP/Accounting/Calc.php

src/QUI/ERP/Accounting/CalculationValue.php

src/QUI/ERP/Accounting/Calculations.php

src/QUI/ERP/Accounting/PriceFactors/Factor.php

src/QUI/ERP/Accounting/PriceFactors/FactorList.php

src/QUI/ERP/Api/Coordinator.php

src/QUI/ERP/Comments.php

src/QUI/ERP/EventHandler.php

src/QUI/ERP/Money/Price.php

src/QUI/ERP/Packages/Installer.php

src/QUI/ERP/Process.php