[UI] Add ability to specify job name and have it show in the job listing page in the UI

[andygrove]

Is your feature request related to a problem or challenge? Please describe what you are trying to do.
When I run SQL benchmarks, I cannot tell from the UI which query is which.

Describe the solution you'd like
I would like to be able to set a configuration option (perhaps ballista.job.name) for the job name and have it show up in the UI.

Describe alternatives you've considered
None

Additional context
None