[I18N] Update translation terms from Transifex

addons/account/i18n/ar.po

addons/account/i18n/hu.po

addons/account/i18n/it.po

addons/account/i18n/lv.po

addons/account/i18n/pl.po

addons/account/i18n/pt_BR.po

addons/account/i18n/sl.po

addons/account_payment/i18n/sl.po

addons/auth_signup/i18n/sl.po

addons/base_geolocalize/i18n/sl.po

addons/crm_iap_mine/i18n/sl.po

addons/delivery/i18n/ar.po

addons/delivery/i18n/hu.po

addons/delivery_mondialrelay/i18n/sl.po

addons/event/i18n/sl.po

addons/event_booth/i18n/sl.po

addons/gamification/i18n/sl.po

addons/google_recaptcha/i18n/sl.po

addons/hr/i18n/sl.po

addons/hr_attendance/i18n/pt_BR.po