fixes #3280 - authenticate returns true for API requests when login:false

fixes #1431 - use boardproductname as model fallback if productname or model fact don't exist

refs #3571 - add filter for notice level in report

fixes #3339 - nested fact support, allow fact importers to be registered by plugins

fixes #3693 - API v2 - accept GET json format of object in PUT/POST requests to add/remove has_many associations

Fixes #3721 - Map OS family to a display variant

Fixes #3720 - Add description field to operatingsystem

refs #3067 - domain stripped from installation media hostname for Solaris

Fixes #3753 - always use main_app to determine paths for running an isolated namespace plugin

fixes #3790 - Added support for isolated engine to foreman menu