alternative affected paths panel for resource history view

Hi!

  I've prototyped an alternative UI for the affected paths panel on a
resource history view. Basically it is using tree widget and grouping
resources by their folders (somehow similar to the sync view). See an
attached screenshot.

  If there is an interest, I can wrap it up and add a property to the
resource history view menu (Layout -> Flat or Compressed Folders).
Though there is an issue that I don't know how to resolve efficiently.
The problem is that LogEntryChangePath class does not have information
if resource is a folder or file and also if change were about file or
about properties. Can someone advise on this?

  By the way, I've noticed that history view now have new icons for
retrieving additional log entries and those icons are not very
intuitive. Can I suggest to use symbols > and >> (like on cassette and
media players) to decorate the sheet icon?

  Thank you.

  Eugene