[I18N] Update translation terms from Transifex

addons/account/i18n/cs.po

addons/account/i18n/el.po

addons/account/i18n/hu.po

addons/account_bank_statement_import/i18n/cs.po

addons/account_check_printing/i18n/el.po

addons/auth_ldap/i18n/el.po

addons/auth_oauth/i18n/el.po

addons/auth_password_policy/i18n/el.po

addons/auth_signup/i18n/el.po

addons/barcodes/i18n/ro.po

addons/base_gengo/i18n/el.po

addons/base_setup/i18n/el.po

addons/base_vat/i18n/el.po

addons/crm/i18n/el.po

addons/crm_livechat/i18n/el.po

addons/crm_phone_validation/i18n/el.po

addons/crm_reveal/i18n/el.po

addons/crm_reveal/i18n/pt_BR.po

addons/delivery/i18n/el.po

addons/digest/i18n/el.po