[keycloak-user] New locale in login/registration pages

Hi guys, Can you tell me how can I add a new locale, let's say Romanian ('ro') to the login/registration pages. In the admin console there is only support 'en', 'de', 'pt-BR', 'it', 'es', 'ca' (why is French not supported by default since all the translations seem to be there?) and if I look at the source code https://github.com/keycloak/keycloak/blob/master/forms/common-themes/src/... they are statically defined... Thanks Adrian