7086: "Remove selected items?" inconsistent YES/NO

also make "YES" the default choice for "Confirm every deletion?"

src/gui/views/listview.py

@@ -498,9 +498,9 @@ class ListView(NavigationView):
                 _("Confirm every deletion?"),
                 _("More than one item has been selected for deletion. "
                   "Ask before deleting each one?"),
-                _("Yes"),
+                _("No"),
-                _("No"))
+                _("Yes"))
-            prompt = q.run()
+            prompt = not q.run()
             
         if not prompt:
             self.uistate.set_busy_cursor(1)