edit note should also be disabled when a note is not editable

Change-Id: I35622ee65ddb7476f43af0ef3aeb0eca6ba0ff4b
Reviewed-by: Vasiliy Sorokin <sorokin.vasiliy@gmail.com>
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/bookmarks/bookmarkmanager.cpp

@@ -246,6 +246,7 @@ void BookmarkView::contextMenuEvent(QContextMenuEvent *event)
         moveUp->setEnabled(false);
         moveDown->setEnabled(false);
         remove->setEnabled(false);
+        editNote->setEnabled(false);
     }
 
     if (model()->rowCount() == 0)