nixos/install-grub: Read correct mountpoints
nixos/grub: Assert devices should be absolute paths
Fix container test
Remove unrar from the installation CD since it's unfree
Revert "nixos: add setuid wrappers for some networked filesystems' helpers"

This reverts commit 26a4001a98322ab903b8186b97f33c5b282828a5. It
breaks the NFS test:

  http://hydra.nixos.org/build/13943148

Also, having more setuid programs is a bad thing security-wise.
Remove some setuid wrappers for non-standard programs
Improve option descriptions a bit
Disable the logstash test

It's broken because it uses the "grep" plugin, which is no longer
included in the standard distribution.
Increase systemd timeout on Jenkins and Munin tests

These were timing out a lot.

http://hydra.nixos.org/build/13991108
http://hydra.nixos.org/build/13991107
nixUnstable: Update to 1.8pre3782_d2d5543
scala-mode2: update to latest version
emacs-dash: add version 1.5.0
emacs-s: add version 1.9.0
emacs-ensime: add current git snapshot
Fix initrd after recent busybox upgrades
nixos/installer-test: Add writable store test
nixos/installer-test: nixos-option syntax correction
remove bittorrent package since it's obsolete
nixos/fail2ban: don't use types.string (it's deprecated)

I'm not really sure which one of types.lines or types.str that fit
better, but I'm going for types.lines because it behaves more like the
current type (i.e. have the ability to merge).
calibre: update from 2.1.0 to 2.2.0