server and port still written when config_gophermap_omitserver is used

[zcrayfish]

I have not had much time to look into this, but when the config_gophermap_omitserver option is set, the server and port are still written into the phlog post itself.

It does seem to work in gophermap at the top of config_dir_phlog at least.

This causes issues when the server needs to send a different port to different clients (e.g. gophernicus running with both plain gopher and gopher over TLS)