Improve handling of cluster status

[atengler]

We should improve handling of cluster status in case of provisioning failure (not always switches the status to error).

[epcim]

Ref - #239

Suggested TODOs:
Provide logs/details why cluster create failed on
Btn. to re-try (possibly to recreate from spec / de-provision (but keep set in UI for later recreate)
Timeline feature to show in UI of actions taken against cluster|provisioner|organization|...