Short list of laptops/desktops that work well with Qubes OS

[fsflover]

@Sven

Ok, I have reintroduced the CPU into the main list but retain the brand/model sorting/grouping to avoid double entires for models. I hope that is a compromise that addresses at least part of you critique while at the same time maintaining the compactness of the list.

I think that showing the year of hardware release would be much more helpful for all (especially inexperienced) users, as suggested in this table. The specific CPU model can always be seen in the specific laptop threads.