Harvey Weinstein was sentenced to 15 years in prison on Wednesday, after being convicted for sexually assaulting former “Project Runway” production assistant Miriam “Mimi” Haley in 2006. The 74-year-old disgraced movie mogul appeared in a downtown Manhattan courtroom in a wheelchair when he learned his fate, according to The Post. Prosecutors wanted Weinstein to get 20 years behind bars, while his lawyers asked for a nine-year sentence. Weinstein’s sentencing will be followed by five years of supervised release and a requirement that he register as a sex offender. “I am not a perfect person. I am a person who has made mistakes,”…