Added helpful and necessary packages

htop: very helpful
pbuilder debootstrap devscripts pigz: necessary for jenkins
Merge pull request #33 from fmw-jk/patch-1

Added helpful and necessary packages
Merge pull request #32 from ipa-nhg/master

update cobadduser script
hopefully without password
specify groups in ubuntu not in adduser script
use groovy bashrc by default
run rosdep update and create git/care-o-bot in cobadduser
use groovy_dev as default branch
remove latex build files
Update README_install-stud-pcs1204Fuerte
Fixed error on scan rules
Small changes on Care-O-bot manual