[I18N] Update translation terms from Transifex

addons/account/i18n/pl.po

addons/account/i18n/sv.po

addons/hr/i18n/de.po

addons/iap/i18n/cs.po

addons/lunch/i18n/pl.po

addons/mail/i18n/mn.po

addons/mass_mailing/i18n/sv.po

addons/point_of_sale/i18n/mn.po

addons/pos_cash_rounding/i18n/mn.po

addons/sale_quotation_builder/i18n/cs.po

addons/sale_timesheet/i18n/sv.po

addons/snailmail/i18n/sv.po

addons/web/i18n/sv.po

addons/website_mail_channel/i18n/sv.po

odoo/addons/base/i18n/mn.po

odoo/addons/base/i18n/sv.po

odoo/addons/base/i18n/zh_TW.po