anchor.diff:  
   const NEW_DATA_COOKIE = {
     "modified":false,
  +  "conflict":false,
     "activeRound":"round_one_categories"
   };
   
  
positive.code:         updateCategoryIds( { ids: [ null, null, null, null, null, null, null,
                                      null, null, null, null, null, null ] } );
        }
        currentGameData["conflict"] = false;
  
        $.ajax({
          method: "POST",
  
negative.code:         // data.match will be truthy iff currentGame's final id
          // matches up with a valid game in the database belonging
          // to the currently-logged-in user.
          if ( data.match ) {
            disableShowDate();
            currentGameData["conflict"] = false;
  