Refs #8716. Add UI controls for filtering.
Refs #8716. Make seq. fit prefix a static constant.

In that way it can be used safely in other places.
Refs #8716. Replace string vectors with string lists.

It's easier to use lists and there is no particular reason to use
vectors.
Refs #8716. Add basic filtering functionality.
Refs #8716. Add error handling for when group was deleted.
Refs #8716. Remove irrelevant messages and do a slight refactoring.
Refs #8716. Make empty list case handling better.
Merge branch 'feature/8716_muon_results_filtering' into develop