fontconfig-ultimate: do not replace terminus or proggy fonts
nixos: fix config.fonts.fontconfig.ultimate.allowBitmaps

The option was incorrectly negated, so that 'allowBitmaps = true'
actually disabled bitmap fonts.
Fix ANSI escape in warning messages

Seems to have been broken by accident in 7d1ddae58e465a1708967c9fee651c33819969c6.
Switch default timezone in NixOS from "CET" to "UTC".

Suggested in https://github.com/NixOS/nixpkgs/pull/5332.
nixos/modules/system/boot/luksroot.nix: hyperlinkify an URL in the documentation
nixos/doc/manual/release-notes/rl-1412.xml: document change of default time zone

https://github.com/NixOS/nixpkgs/pull/5332
haskell-generics-sop: mark as broken because of https://github.com/well-typed/generics-sop/issues/3