Fixes #18045 - Puppet classes show up choosing only env.

After #3551 was merged, the hosts controller requires both environment
and hostgroup to be set in order to display puppetclasses.

It shouldn't be required to have both, so we should check what's
available and use it. If it's only the hostgroup or the environment, it...

Fixes #17844 - unify test mail js code

Fixes #18099 - Update the close button style

Change the close button style in the modal window, keep consistent
with PatternFly close button.

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...

Fixes #10539 - Add default names for ifaces for oVirt CR VMs

Fixes #12547 - Added validators to interger fields

With this commit, instead of postgresql exception it will
show proper validation message for interger fields.

Fixes #18085 - Update 'Build PXE Default' to secondary style

Each page should have one clear call to action, so update the
Build-PXE-Default button to secondary button style

Fixes #17653 - Allow all parameters api to unhide values

Fixes #15405 - Moved puppet UI to helpers

Fixes #18061 - Use the term 'Actions' consistently in smart proxy