Comedian Aaron Foster brings his award winning and darkly funny show “Mostly Jokes” to the Phoenix Theater in Minneapolis for one night only as he prepares to tape his first special. It’s dark comedy about mental health, mid-life, and Paul Rudd, because, of course. Growing up with a bipolar father and a schizophrenic brother left Aaron Foster with a combination of survivor’s guilt, depression and anxiety that has invalidated his every accomplishment, destroyed his every relationship and invaded his every…