fixes #6248 - API V2 return object for POST/PUT/DELETE should not include root node

fixes #6216, #4416 - avoid foreign key errors when deleting some objects in use

fixes #6229 - validate installation media exists for new host if pxe_build

fixes #6003 - don't render user default loc/org object directly

fixes #5722: VM-based host cloning picks up existing compute attributes

fixes #4250 - API v2 - add compute profiles

fixes #5612 - use correct permissions for authz in parameters API

fixes #5506 - added scoped search to SmartProxy for UI and API v2

fixes #4204 - add config groups feature - assign multiple config groups to a host or hostgroup

fixes #3914 - set current taxonomies on login from user defaults