The Broadway musical will be at the Scotiabank Centre in July. Halifax, you're really, really excited about the two Broadway performances coming to the city in 2023: Enough, in fact, to warrant an extension to The Book of Mormon's run this July at the Scotiabank Centre. Yup, that's right: A press release from the show producers sent this morning says that four extra shows are being added to the musical's fast-selling date range, from July 18-23…