Elsa Keslassy International CorrespondentNewen Group, the TF1-owned French production and distribution outfit, has acquired a 51% stake in the German production company Flare Film, whose slate includes the upcoming Sky Original show “Paradiso” and Ildikó Enyedi’s “Balaton Brigade.”Launched in 2008 by Martin Heisler, the Berlin-based company has been focusing on director-driven documentaries and films that have been showcased on the international festival circuit.