Refactored

- Yes, looks like it's worth merging with conftree.rb
- added FIXME
Added more and better logging

- for instance, logs how long it takes to clone a single module
Hidden module cannot be cloned, so it can't be exported either
Adapted <listentries> enabled/disabled->services
Added new version and changes file entry
Merge pull request #68 from kobliha/do-not-clone-runlevel-which-is-not-clonable

Do not clone modules that are hidden