[Enhancement] Scrollable list for removing custom icons

[Tammy]

In the "Create/edit a column icon rule" screen (Preferences / Look & feel / Column icons) , the 'Remove icons' button leads to a click-to-delete list of added icons. There is no way to scroll through this list, so if it gets too large (like mine is), I can't get to the icons near the end. Can you make this list scrollable? And maybe include checkboxes to delete multiple icons at once? Thank you.