crontab: run newsboat in cgroup
crontab: run newsboat in cgroup

newsboat uses too much memory (> 300 MB of 1.83 GB) and causes my system
to swap. This will just make newsboat swapping, but it isn't really all
active memory anyway.

paretje/dotfiles,paretje/dotfiles,paretje/dotfiles,paretje/dotfiles,paretje/dotfiles