anchor.diff:  
   - macro argument_stats(argument, user)
   
  -  vote = argument.user_vote(user)
  +  vote = argument.user_vote(user) if user.is_authenticated else None
     upvoted = vote.is_upvote if vote else False
     downvoted = vote.is_downvote if vote else False
   
  
positive.code:     .argument_details_extended= (argument.details or "")|markdown
  
      = argument_footer(argument)
      
    .counter_argument_box_full_line
    = counter_arguments_button(argument, full=True)
  
  
negative.code:     abstract_cls = "argument_abstract"
      argument_cls = "argument argument_" + argument.argument_type
      if no_counter
        argument_cls = argument_cls + "_no_counter"
  
    if show_ca_button
      = counter_arguments_button(argument)
  