fixes #297 - Prevent operatingsystem.minor from storing NULLs

fixes #296 Check for existence of family_id before referencing it

fixes #293 - add table sorting to users page

fixes #291 - clone host does not clone assoicated classes

fixes #289 - Import host hardware model

minor code smell cleanups

fixes #255 Search for MAC addresses from all X-RHN-Provisioning-MAC headers, not just eth0

minor formating changes

Fixes #101 - Generate rdoc files and html links on the puppetclasses page

Rewite rdocs if required by the prepare phase
Incorporate Fank Sweetser's :: patch
Incorporate a url_helper suggested by Ohad
Added a new interface via links on the supported environments list

fixes #247 - Query for class to support HostGroups