fixes #2431 - handle fact uploads where host is missing $fqdn
fixes #2945 - extend AR to add getter/setters *_name(s) for has_many/belongs_to associations
fixes #2877: deletion of the organization or location in the context no longer breaks the session
fixes #2945 correction - has_and_belongs_to_many defined twice
fixes #2932 - add find_by_fullname for Operatingsystem