Judgment of the Court of 16 December 2015 in Case E-5/15 — Matja Kumba T M'bye and Others v Stiftelsen Fossumkollektivet (Directive 2003/88/EC — Working time — Protection of the safety and health of workers — Organisation of working time — Rest periods — Maximum weekly working time — Derogations from minimum rest periods — Workers' consent — Detriment)