Joined Cases C-372/09 and C-373/09: Judgment of the Court (Fourth Chamber) of 17 March 2011 (reference for a preliminary ruling from the Cour de cassation — France) — proceedings brought by Josep Peñarroja Fa (Article 43 EC — Freedom of establishment — Article 49 EC — Freedom to provide services — Restrictions — Court experts who are professional translators — Exercise of official authority — National legislation reserving appointment as a court expert for persons enrolled in registers established by the national judicial authorities — Justification — Proportionality — Directive 2005/36/EC — Concept of ‘regulated profession’ )