Case C-190/11: Judgment of the Court (Fourth Chamber) of 6 September 2012 (reference for a preliminary ruling from the Oberster Gerichtshof — Austria) — Daniela Mühlleitner v Ahmad Yusufi, Wadat Yusufi (Jurisdiction in civil and commercial matters — Jurisdiction over consumer contracts — Regulation (EC) No 44/2001 — Article 15(1)(c) — Possible limitation of that jurisdiction to distance contracts)