Katello/katello — pull request #567 by xsuchy (2012-09-03 14:44:29+00:00)
Title: 852631 - katello-cli fails when system_group is empty

First 4 commits are just cleanup.
Important is last commit:
job without task should not exists, this is error

This is solution from katello-cli point of view. However, I'm not sure, whether this should be handle in app/models/system_group.rb more nicely. E.g. substitute this error with success and message saying "system group is empty, nothing to install, therefore I'm already done'.

@bbuckingham