Date header

[douxxtech]

Added Date: header as described here: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Date

Also reorganized order of headers:

HTTP/1.0 200 OK
Date: Thu, 19 Mar 2026 16:39:16 GMT
Server: NASMServer/1.4
Connection: close
Content-Type: text/html
Content-Length: 3501
Expires: Thu, 19 Mar 2026 16:39:16 GMT