When accepting connections as localhost, webfinger & storage requests will fail for public RS apps

[DougReeder]

This is due to Private Network Access, a new security mechanism, at present only on Chrome. A preflight request is sent before the webfinger request. At present, Armadietto does not support OPTIONS requests for webfinger paths, so the preflight fails with a CORS error, and the webfinger request is never made.

For the near term, RS apps on public servers can be used with Armadietto accepting connection on localhost, by using a browser that isn't Chrome. Longer term, no browser will allow this, which cramps testing of Armadietto on localhost.

RS apps also running on a HTTP server accepting connections on localhost will always be able to access Armadietto accepting connections as localhost. I think that's an acceptable workaround, as Private Network Access is a security mechanism.