Update job and cluster information
Added cluster-update endpoint
Update xplenty-control-and-monitoring-tasks.md

Formatting 
Move terminate job polling to its section
Additional information about notifications
Update xplenty-control-and-monitoring-tasks.md
Update create-cluster.md

Change order of return attributes to correspond to example
Put input parameters in a table
Update list-clusters.md

Change order of returned values to correspond to example
Input parameters in a table
Update update-cluster.md

Included return parameters and modified some text to be consistent with other APIs
Input values in table
Update get-cluster-information.md
Update terminate-cluster.md

Included return parameters and some other changes to be consistent with create API
Update list-clusters.md
Update run-job.md

failed_at is defined in list jobs, but not in this API. Checking that is correct
Can the status be any value - the example shows completed?
Update get-job-information.md

Added outputs to return details since it is included in response example
Update terminate-job.md

Included return details as in other call APIs
Update xplenty-typical-workflow.md

Included reference to the pages for each step and removed the response example.
Merged changes