Determine why some file uploads timeout

[uckelman]

See https://forum.vassalengine.org/t/apierror-408-when-uploading-new-module/89691

[uckelman]

From testing, we've determined that the slow part is the reverse proxy, which is Apache. The plan now is to replace Apache with Caddy.

[uckelman]

We have replaced Apache with Caddy.