[I18N] Update translation terms from Transifex

addons/account/i18n/bg.po

addons/account/i18n/et.po

addons/account/i18n/fi.po

addons/account/i18n/gu.po

addons/account/i18n/it.po

addons/account/i18n/ja.po

addons/account/i18n/pl.po

addons/account_analytic_default/i18n/bg.po

addons/account_asset/i18n/bg.po

addons/account_asset/i18n/fi.po

addons/account_bank_statement_import/i18n/bg.po

addons/account_budget/i18n/bg.po

addons/account_check_printing/i18n/bg.po

addons/account_check_printing/i18n/et.po

addons/account_tax_cash_basis/i18n/bg.po

addons/account_test/i18n/bg.po

addons/account_voucher/i18n/bg.po

addons/analytic/i18n/bg.po

addons/anonymization/i18n/bg.po

addons/auth_ldap/i18n/bg.po