[I18N] Update translation terms from Transifex

addons/account/i18n/ca.po

addons/account/i18n/es_MX.po

addons/account/i18n/hr.po

addons/account/i18n/id.po

addons/account/i18n/it.po

addons/account/i18n/pl.po

addons/account/i18n/pt_BR.po

addons/auth_signup/i18n/mn.po

addons/coupon/i18n/id.po

addons/crm/i18n/es.po

addons/crm_iap_enrich/i18n/pt_BR.po

addons/crm_iap_mine/i18n/pt_BR.po

addons/crm_mail_plugin/i18n/pt_BR.po

addons/event/i18n/ar.po

addons/event/i18n/pt_BR.po

addons/fetchmail/i18n/pl.po

addons/gift_card/i18n/id.po

addons/hr_attendance/i18n/fi.po

addons/hr_contract/i18n/ja.po

addons/hr_expense/i18n/id.po