title: Signal when a QListView selection changes due to keyboard activity?
body: <p>I have a QDialog, created with QT Designer, that looks like so: <img src="https://i.stack.imgur.com/CtfrF.png" alt="Dialog"></p>
  
  <p>The list of servers on the left is a QListView with a QStringListModel. Mouse clicking an item in the list view updates the form with the information for the selected item by connecting the view’s activated(QModelIndex) signal to a slot function in the dialog.</p>
  
  <p>However, pressing up or down on the keyboard also changes the selected item, but no signal is emitted, so the form isn't updated to match the selected item. How can this be fixed?</p>