openvpn: Fix i18n and minor refactoring
openvpn: Fix i18n and minor refactoring

- Remove hard coded link

kkampardi/Plinth,freedomboxtwh/Plinth,vignanl/Plinth,freedomboxtwh/Plinth,kkampardi/Plinth,vignanl/Plinth,harry-7/Plinth,vignanl/Plinth,kkampardi/Plinth,freedomboxtwh/Plinth,freedomboxtwh/Plinth,kkampardi/Plinth,harry-7/Plinth,freedomboxtwh/Plinth,harry-7/Plinth,harry-7/Plinth,vignanl/Plinth,harry-7/Plinth,vignanl/Plinth,kkampardi/Plinth