[I18N] Update translation terms from Transifex

addons/account/i18n/sl.po

addons/account/i18n/sv.po

addons/account/i18n/tr.po

addons/account_payment/i18n/sl.po

addons/auth_signup/i18n/pl.po

addons/base_sparse_field/i18n/sl.po

addons/crm/i18n/tr.po

addons/delivery/i18n/sl.po

addons/digest/i18n/sv.po

addons/event_sale/i18n/ca.po

addons/event_sale/i18n/sl.po

addons/fetchmail/i18n/ca.po

addons/gamification/i18n/ca.po

addons/gamification/i18n/et.po

addons/hr_expense/i18n/sl.po

addons/hr_gamification/i18n/ca.po

addons/hr_holidays/i18n/fr.po

addons/hr_holidays/i18n/sl.po

addons/hr_payroll/i18n/ja.po

addons/hr_payroll/i18n/sl.po