Every week, Fangirlish writers will be discussing new episodes of Supergirl and sharing their thoughts, feelings, and speculation about the hour’s hot topics in a little something we like to call Fangirlish Roundtables. Today, we’re breaking down episode 17 of Supergirl, “Manhunter” where we discuss the DEO and morality, our love for the Kara/Alex/J’Onn relationship,…