Use app-url for grouping + allow to activate app root-item
Use app-url for grouping + allow to activate app root-item

* Use app-url for grouping to different app instances
  with same name are not grouped together.
* Made it possible that activating the application root-item
  in the eventsView shows the matching item in the treeview.

KDE/libkdeaccessibilityclient,KDE/libkdeaccessibilityclient