Case F-29/11: Judgment of the Civil Service Tribunal (First Chamber) of 5 December 2012 — BA v Commission (Civil service — Open competition — Competition notice EPSO/AD/147/09 — Creation of a reserve list for the recruitment of administrators having Romanian citizenship — In-depth knowledge of the official language of Romania — Hungarian language minority in Romania — Not admitted to the oral test — Principles of equal treatment and non-discrimination — Scope)