#3 Local archive tree does not automagically populate itself

[Chad Plaster]

The local archive tree (in the Viewer tab) should populate itself instantly, instead of having to manually refresh the list.

Also, the tree has a tendency to become polluted. If you expand a directory, then close it, and then open it again, the directory contains multiple entries for each item. I think this is because the current tree populator does not deconstruct subtrees, therefore when a subtree is closed and reopened, the directory contents are appended to the EXISTING contents list (which should not exist).

A subtree_unpopulate() function is probably the cure for this.