Fixes #24227 - Add permissions info to models API

During the process of moving Hardware Models to a React page
the current API was missing significant details that are rendered
in the Backend before the page is sent to the user.

For example, whether the user is allowed to edit a model or not...

Fixes #25102 - introduce template inputs

This adds the formal template inputs to all templates. It's heavily
based on current implementation from remote execution plugin.

Fixes #24259 - Add canned admin role

Fixes #24232 - Return taxed and untaxed audits in list (#6073)

Fixes #15707 - AWS support for GovCloud

Fixes #19790 - Fix Layout/SpaceBeforeBlockBraces cop

Fixes #24783 - Refactor hosts count

This takes advantage of the new HostCounter service to simplify and
unify host counts throughout the application. A cache was also added to
the service to speed up responses when multiple counters are created for
the same association in quick succession.

Fixes #24831 - Remove Rails 5.1 workaround for slow api call

Fixes #24782 - Show hosts count in API

Signed-off-by: Boaz Shuster <boaz.shuster.github@gmail.com>

Fixes #24735 - parameters missing from GET hostgroup api