Fixes #16422 - Foreman API throws ruby exception with ovirt network API

Passing a 'nil' resource_class to the `scope_for` method will always result in a 500 as you cannot call `.where` on nil.

fixes #11127 - show error when rebuild reboot fails

Fixes #17483 - async task creation returns 202

Includes task link in response

Fixes #17296 - Add setting access_unattended_without_build

Fixes #15779 - make background processing available

Fixes #17343 - set deep munge config off

deep_munge was introduced as a solution to keep
Rails secure by default which results in
'empty array becomes nil in params'.
Thats why, set deep_munge config off in application.rb.
Also, added changes which will cast param argument to string...

Fixes #17441 - override all parameters permission changed to edit

Fixes #16739 - unify parameters permissions

Fixes #17403 - enable exporting of templates

refs #14688 - correct i18n extraction for all new power methods

- HOST_POWER being translated at the class level, not in action context
- messages with variables interpolated prior to i18n lookup
- timeout message being translated without prior extraction