“The Protector of Concord Dawn,” introduces more background information to our favorite artistically inclined Mandalorian, Sabine Wren, but also re-introduces us to Fenn Rau, also a Mandalorian, and one who played a minor role in the past of Kanan Jarrus.  As noted here previously, Kanan’s connection to Rau was established in the Marvel comic Kanan,…