Felix Magath called for unity at Bundesliga crisis club Hertha Berlin on Monday, a day after he was appointed interim coach to the end of the season. “We all need to work together to get out of this difficult situation – it’s not about myself or [managing director] Fredi [Bobic], only Hertha BSC,” he told a news conference. “Achieving our goal will only happen when we are fully concentrated on the task and focus on the essentials.” Five successive losses proved the end of previous boss Tayfun Korkut at the weekend with the club now 17th in the table. “We know the situation we’re in. We have ei…