Support node step flag for job references #517
Refactor job ref execution code #517
GUI support for node step job references #517
Update and test validateWorkflow method #517
runJobNow could cause exception

* return model explicitly from show() action
Update job xml/yaml tests for #517
Update GUI for node step job references #517
Update Docs for node step job references #517
Job ref node step should not override node filters #517
Merge branch 'issue/517-job-ref-node-step' into development