WIP: Refactor (DRY): Create new shared super class (`ListView`) for `FeatureListView` and `ValueListView` and move duplicate code for filtering items and showing all items to that class.
WIP: Refactor (DRY): Create new shared super class (`ListView`) for
`FeatureListView` and `ValueListView` and move duplicate code for
filtering items and showing all items to that class.

itsjeyd/ODE,itsjeyd/ODE,itsjeyd/ODE,itsjeyd/ODE