Merge pull request #15 from fschaer/fix

Fix issues and allow for no repository management
Reverting to '/bin/sh' as @posix_shell@ does not seem to work.
fixing duplicate parameters
a bit of documentation
Merge pull request #14 from kreczko/fixes_for_GLUE_and_scheduling

A bit of documentation and a few fixes
fix : the file resource might fail if the packages containing the cfg
files are not yet installed when attempting to overwrite
add fetchcrl dependency and remove copy/pasted code