Description of problem:
User experience: I want to see relatively recent task. Going to WebUI -> Monitor -> Tasks, I always see auxiliary tasks like "Pulp disk space notification" or "Create RSS notifications" and similar - and only below them, there are a few relevant user tasks (a few for default pagination).

It would be great to have an option to hide the auxiliary tasks.

Version-Release number of selected component (if applicable):
6.14 (but in fact it applies to any version)

How reproducible:
100%

Steps to Reproduce:
1. Navigate in WebUI to Monitor -> Tasks

Actual results:
1. The task list always show the auxiliary tasks. No option to (temporarily) hide them.

Expected results:
Have an option to (temporarily) hide the auxiliary tasks: even completed - e.g. assume a use case I run a task few days ago and made Satellite idle since then. Now, the tasks list is full of the auxiliary tasks (scheduled and stopped) for very first few pages.

Additional info: