Sync from transifex

htdocs/langs/ar_SA/admin.lang

htdocs/langs/ar_SA/commercial.lang

htdocs/langs/ar_SA/compta.lang

htdocs/langs/ar_SA/errors.lang

htdocs/langs/ar_SA/holiday.lang

htdocs/langs/ar_SA/install.lang

htdocs/langs/ar_SA/main.lang

htdocs/langs/ar_SA/orders.lang

htdocs/langs/ar_SA/paybox.lang

htdocs/langs/ar_SA/suppliers.lang

htdocs/langs/bg_BG/admin.lang

htdocs/langs/bg_BG/commercial.lang

htdocs/langs/bg_BG/compta.lang

htdocs/langs/bg_BG/errors.lang

htdocs/langs/bg_BG/holiday.lang

htdocs/langs/bg_BG/install.lang

htdocs/langs/bg_BG/main.lang

htdocs/langs/bg_BG/orders.lang

htdocs/langs/bg_BG/paybox.lang

htdocs/langs/bg_BG/suppliers.lang