[I18N] Update translation terms from Transifex

addons/account/i18n/it.po

addons/account/i18n/ne.po

addons/account/i18n/tr.po

addons/account_cancel/i18n/ca.po

addons/auth_ldap/i18n/ca.po

addons/auth_oauth/i18n/ca.po

addons/auth_signup/i18n/ca.po

addons/barcodes/i18n/cs.po

addons/base_automation/i18n/hu.po

addons/base_automation/i18n/vi.po

addons/base_gengo/i18n/ca.po

addons/base_gengo/i18n/vi.po

addons/crm_livechat/i18n/vi.po

addons/event/i18n/cs.po

addons/gamification/i18n/vi.po

addons/hr/i18n/sl.po

addons/hr_attendance/i18n/sl.po

addons/hr_contract/i18n/sl.po

addons/hr_gamification/i18n/sl.po

addons/hr_holidays/i18n/sl.po