The Toronto Maple Leafs regular season is about to start tonight with the team’s first preseason games against the Ottawa Senators. With the onset of the season, there’s increased talk about the job status of both general manager Kyle Dubas and head coach Sheldon Keefe. There’s frankly been a nasty mood hanging around the team all offseason. The mood is more mean-spirited, short-tempered, and just plain nastier than I’ve seen it since I’ve covered the team now entering my fifth season. A Vocal Group of Maple Leafs’ Fans Want Coach Keefe Fired The mood is pushed by a ton of…