Fix: A lot of fix in translations

htdocs/langs/ar_AR/admin.lang

htdocs/langs/ar_AR/bills.lang

htdocs/langs/ar_AR/categories.lang

htdocs/langs/ar_AR/commercial.lang

htdocs/langs/ar_AR/companies.lang

htdocs/langs/ar_AR/errors.lang

htdocs/langs/ar_AR/install.lang

htdocs/langs/ar_AR/mails.lang

htdocs/langs/ar_AR/main.lang

htdocs/langs/ar_AR/members.lang

htdocs/langs/ar_AR/orders.lang

htdocs/langs/ar_AR/other.lang

htdocs/langs/ar_AR/propal.lang

htdocs/langs/ar_AR/suppliers.lang

htdocs/langs/ar_AR/users.lang

htdocs/langs/ar_AR/withdrawals.lang

htdocs/langs/ca_ES/admin.lang

htdocs/langs/da_DA/admin.lang

htdocs/langs/da_DA/bills.lang

htdocs/langs/da_DA/boxes.lang