Enhancements to next steps/results messaging

[rhamilto]

In #2184, we didn't get to a few items and punted on them. This issue is to track them so we tackle them in the near future.

• Display webhook info when appropriate inside wizard results (currently only shows on standalone next steps)
• Show proper type of imported item in import wizard results (non-templates are generically called "YAML / JSON"). [sgoodwin] And resolve bug where results-status-unknown message displays instead of results-status success when importing statefulset-hello.yaml.
  
• Improve display of provision call failure message. Upstream message formatting improved.
  
  
  
  
• Add appropriate actions when failure occurs

[jhadvig]

The Improve display of provision call failure message item is blocked on kubernetes-retired/service-catalog#1435
@rhamilto @spadgett FYI

[spadgett]

I'm looking at the import YAML message now. We have a separate bug for it from QE:

https://bugzilla.redhat.com/show_bug.cgi?id=1505281

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