Object.send(:remove_const, :User)     if Object.constants.include?(:User)
Object.send(:remove_const, :Project)  if Object.constants.include?(:Project)
Object.send(:remove_const, :Idea)     if Object.constants.include?(:Idea)
Object.send(:remove_const, :Issue)    if Object.constants.include?(:Issue)
Object.send(:remove_const, :Comment)  if Object.constants.include?(:Comment)