fixes #4220 dashboard and report-show pages chart-frame is not in place.

fixes #3999 - refactor DRY implementation of "nested label" for objects with ancestry

templates - sync from community-templates

Fixes #4196 "Power ON this machine" disappeared for new VMWare hosts

fixes #4188 - api/v2/status incorrectly shows api_version: 1

fixes #3960 - wrap APIv2 errors in an "error" node

fixes #4152 - fix syntax error in _form.html.erb for hosts and hostgroups

fixes #3909 - add disassociate and bulk action disassociate to interface

fixes #3920 - prevent 500 ScopedSearch errors on the API, raise UI errors correctly

fixes #3760 - API v2 define metadata @total for each controller