The Boston Opera House, fallen into disrepair since closing in the early-90s, is getting a $31 million makeover. “It’s a pet project of Mayor Thomas Menino, who has been pushing for the renovation since 1996 as part of his effort to revitalize the old theater district along Washington Street in the heart of downtown Boston, just a few blocks north from what used to be the ‘Combat Zone,’a once sleazy collection of sex-oriented shops, bars and porno movie houses.”