Fix cs and bug with positions
	modifié:         core/lib/Thelia/Core/DependencyInjection/Loader/XmlFileLoader.php
	modifié:         core/lib/Thelia/Model/Export.php
	modifié:         core/lib/Thelia/Model/Import.php
Fix tests and rename one
	renommé:         core/lib/Thelia/Tests/ImportExport/Import/ProductPriceImportTest.php -> core/lib/Thelia/Tests/ImportExport/Import/ProductPricesImportTest.php
	modifié:         core/lib/Thelia/Tests/ImportExport/Import/ProductStockImportTest.php