(E! Online) – Beyoncé and Jay Z have kept on keepin’ on. With news of Jay Z’s run-in with sister-in-law Solange Knowles as they were leaving a Met Gala afterparty taking up a huge chunk of the Internet, Blue Ivy’s parents looked to be in perfectly benign spirits tonight at Brooklyn’s Barclays Center. They were sitting courtside to watch Game 4 of the […]