Fix selection in the Details view in the following use case:

Fix selection in the Details view in the following use case:

1. Ctrl-click item 1.
2. Enter the first letter of item 2, such that
   it will be selected and the new current item.
3. Shift-click item 3.

With this commit, all items between 2 and 3 will be selected, as
expected, and not all items between 1 and 3.

BUG: 201459

svn path=/trunk/KDE/kdebase/apps/; revision=1021267