find_name_for_user: do not break on users without names

Signed-off-by: Bas Westerbaan <bas@karpenoktem.nl>
cilia: use chpasswd instead of usermod

Signed-off-by: Bas Westerbaan <bas@karpenoktem.nl>
Merge branch 'master' of git://github.com/karpenoktem/kninfra into nologinrequired-voor-rauth
veranderingen ongedaan maken