Fixes #18126 - Fix security groups select for EC2 form

Fixes #18280 - Adds compute resource provider name

Makes the API return the provider name of the compute resource

Refs #15779 - make background processing unavailable for now (#4217)

The original PR got vetted in the packaging phase and including
foreman-task as dependency of Foreman was refused. We need to rethink
our approach for getting the foreman-tasks functionality available...

Fixes #17872 - Update button label from New to Create

Based on PatternFly Terminology and Wording suggestions
Don't recommend to use New, so update New to Create.

Fixes #12649 - Index search not retained on cancel click

On pages puppet classes and host group, index search is not
retained on form's cancel click.
Added cancel_path_with_index_search method
in file application_helper.rb

Refs #17653 - add show_hidden to apidoc

fixes #18010 - UI Notifications front-end implementation

Fixes #18127 - Correcting length of group base field

Fixes #17844 - unify test mail js code

Fixes #6502 - List ignored classes and environments on import

When importing environments and classes from puppet, ignored
environments and classes defined in ignored_environments.yml
aren't aparent.

This will add them to the list to import as ignored and...