Merge pull request #1 from jaypipes/working

Initial cleanups for Horizon cookbook
Removed openstack-utils deps
Merge pull request #2 from retr0h/working

Removed openstack-utils deps
Fixes user/group issues in Apache site

* Accidentally made the mistake of assuming there was
  a Horizon user and group created by the package. There is
  not, and since the dashboard site runs as apache user/group,
  this sets the correct settings in the apache site template
  back to use the apache user, not horizon user.