Patch traduction anglais

htdocs/langs/en_US/admin.lang

htdocs/langs/en_US/banks.lang

htdocs/langs/en_US/bills.lang

htdocs/langs/en_US/categories.lang

htdocs/langs/en_US/commercial.lang

htdocs/langs/en_US/companies.lang

htdocs/langs/en_US/compta.lang

htdocs/langs/en_US/contracts.lang

htdocs/langs/en_US/install.lang

htdocs/langs/en_US/main.lang

htdocs/langs/en_US/orders.lang

htdocs/langs/en_US/products.lang

htdocs/langs/en_US/projects.lang

htdocs/langs/en_US/propal.lang

htdocs/langs/en_US/sendings.lang

htdocs/langs/en_US/shop.lang

htdocs/langs/en_US/stocks.lang

htdocs/langs/en_US/suppliers.lang