Expand All and Collapse All options for tree view
Currently in the tree view of directory and file listings the user has the option to expand or collapse an individual directory by clicking on the + or- icon or double clicking on the directory name in the tree. I think it would be worthwhile to have a the option to be able to expand all or collapse all the sub-directories as well. This would quickly lessen the visual clutter that happens when, for example, a search returns a large number of hits in multiple directories and sub-directories. The state should probably only persist until the search is re-run.