XB/UCI chronology links actualized

[Guenther]

An overdue extensive link check for the chronology revealed a few new
dead/broken/url-infected sites:

Delphil
Alaric
Sloppy
Trace
Fischerle
Dirty + EveAnn

may be just currently out of order?

SlowChess (+SamChess)

All of them were replaced by working wayback archive links today.

A very few file download links from Google-Drive/CCRL-Forum were removed too, because the files were removed meanwhile.