fixes #9397 - Make usage of @host.operatingsystem in UnattendedController consistent

Changed all host.os to host.operatingsystem

Fixes #8736 - confirmation before host delete for freshly created hosts

templates - sync from community-templates

Fixes #9461 - Update subnets on domain change in hostgroup

Fixes #3278 - Correctly extract "New %s" strings

Fixes #5998 - add taxonomy tabs to config_template#edit

Fixes #9496 - Adds popover help to IPAM field in Subnet form

fixes #6655 - remove _ForemanSelectedhosts cookie on action submit

Fixes #9351 - use correct interfaces url for AJAX calls

fixes #9335 - adds toggle to puppet classes list & better ui