Site Updated

[Mick West]

I did a fairly significant site upgrade today, updating:

1. Ubuntu (the server's operating system) from 20.0.4 LTS to 22.0.4 LTS
2. PHP (the language used by the forum software, and a bit of Sitrec) from 7.2 to 8.3.6
3. Xenforo (the forum software) from 2.2.something to 2.2.16

This all should be good, as PHP 8 is faster than PHP 7, and the other updates fix a variety of issues. But as with any large upgrade there's the potential for unanticipated conflicts. So let me know if anything seems to be broken or different in a bad way.