Sync the jump lists QML API

The C++ API was changed - update the QML API accordingly.

Change-Id: I89d0939c4ffc27580e7db53a479db4ff70ee0fef
Reviewed-by: Ivan Vizir <define-true-false@yandex.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>