Add navigate up/down action in mobile/tablet tool bar


Note that this says navigate up or down, not move the list up or down; just want to suggest this as a temporary solution to problems with up and down arrow keys from external keyboard not working in iOS.

Also out of context, with 2 extra actions in tool bar, just giving an extra suggestion to group certain actions in a specific group and access an action inside with hold-release mechanics to make tool bar less cluttered while retaining function.