#2 collapse subtrees
treeview and navbuttons now each work for their own and each component communicates with the other one appropriately. props are exchanged correctly between the components. branches are expandable and collapsable for their own.
treeview and navbuttons now each work for their own and each component communicates with the other one appropriately. props are exchanged correctly between the components. branches are expandable and collapsable for their own.