refs #18031 - change Admin field string in PO, remove new string

Fixes #4519, #9531 - Correctly handle invalid host name changes

Removing a host name or otherwise changing it to an invalid name (such
as a name containing /) caused the form to fail loading. This makes sure
all paths are generated correctly and validation error is shown.

Fixes #18025 - make user groups sortable

Fixes #18031 - unify admin flag label

Fixes #3551 - Show unavailable Puppet Classes in Host Group edit

Puppet Classes can be assigned to a Host Group even if they are
not available in the set environment.

The Classes persist through out changes of the environment,
but were previously hidden from the UI this changes that....

Fixes #17972 - Simplify new trend form js and helpers

Migrated the js to webpack as well.

Fixes #16782 - reset dhcp record cache after mac change

Fixes #17457 - multiple_checkboxes doesn't work with orgs/locs

multiple_checkboxes calls ActiveModel::Naming on associations that could
be simply "Taxonomy". This results on a 500 error 'undefined method
`taxonomies' for #<Filter:0x005593624bdd18>' (or whatever other class...

fixes #4166 - vmware: update cpus, memory for vms

Fixes #17846 - auth_source_ldaps API now displays taxonomies