fixes #3160 - sanitize host/host group names in lookup_value associations (CVE-2013-4386)
fixes #3048 - Non Admin user fails to override parameters when creating new host
fixes #3207 avoid extra validation calls when importing a report
fixes #3190 - Fix STI auditable_type - Audit should say updated Location/Organization rather than updated Taxonomy and ComputeResource should not use STI class