Feature Request: ability to apply to all jobs in a view from the UI #590

Use case: I queue up a 10,000 tiny jobs and notice a bug that I need to resolve before the "big backfill" takes place. I pause the queue, and begin clearing out the erroneous jobs. The web UI can only handle 200 at a time, and even that takes forever. I've taken to automating the process with a JS bookmarklet, or in really, really large jobs a backend subtool that'll purge the job queue.

I know it's non-trivial, but I'd love it if there were a way to "Select All" and let the backend sort it out, similar to how Gmail does it:

1. hit the "Select All" button
2. a special secondary dialog pops up for "there are N total jobs in this queue. select everything?"
3. some special parameter passed back to the UI that confirms "yes, I mean everything"
4. hit button to apply (retry/delete/cancel/etc)
5. dialog that says "applying, this may take awhile ..." and then the backend does its thing.

Thanks for reading, and as always, thanks this fantastic tool.