Workflow-monitoring in Unity.py

[rtapella]

https://github.com/unity-sds/unity-py/issues/13

AC: from Jupyter

• [x] you can list jobs
• [x] you can see the error for a job
• [x] you can see status of a job
• [x] you can get a list of jobs
• [x] see all metadata for a job
• [x] get results of a job
• [x] dismiss job

[rtapella]

in initial release, workflow monitoring does not include per-task status (only the entire thing)

[rtapella]

Need to re-test with getResults and dismissJob after some SPS/WPS-T changes