What Mids fans need to know entering the last game of the regular season — because there’s nothing regular about Army-Navy: Who, where, when: Texas State (3-6, 1-3 Western Athletic Conference) at Navy (6-4), Saturday, 3:30 p.m. TV: CBS Sports Network (Grant Boone and Todd Christensen have the call) Gambling is illegal in most states: Navy is a 13.5-point favorite. Firsts: It’s the Bobcats’ first season in the Football Bowl Subdivision. Navy’s playing Texas State for the first time. It also might be the first time a team that gave up 41 points the week before (Navy lost 41-31 to…