Change blacklist and whitelist terminology

I agree with the former post and will close this for the mentioned reasons.

No question, this is a diverse topic. Whether we agree or not, whether we want to follow other big-tech or not - we have well received that there is concern about the terminology with many users. As we have mentioned previously, the currently still under development v6.0 branch of Pi-hole has changed the terminology to "block" and "allow" already years ago. This would have had been released a long time ago when Covid-19 wouldn't have hit the Pi-hole team in its own way, considerably delaying its development. Nonetheless, we are about to start the public beta sometime these days.

You see, it is not that we are not doing anything. Everything that was asked for is long there. It is just some breaking change we couldn't do overnight with a small update but instead integrated this from the very first day in our completely redesigned API.