anchor.diff:  <div class="info">
   <% @city.bins.each do |bin| %>
   	<% category = 'Metal' %>
  -	<% ordered = bin.items.select { |item| item.category.name == category } %>
  +	<% ordered = bin.items.select { |item| item.category.name == category }.sort_by{|item| item.name} %>
   	<% if ordered.empty? %>
   		<%= "Sorry, there is no info about the " + category + " items in this city." %>
   		<%= "Suggest a change!" %>
  
positive.code: <div id="cardboard" class="portion Cardboard">
    <h2>Cardboards</h2>
  </div>
  <div class="info">
  <% @city.bins.each do |bin| %>
  	<% category = 'Cardboard' %>
  	<% ordered = bin.items.select { |item| item.category.name == category } %>
  	<% if ordered.empty? %>
  		<%= "Sorry, there is no info about the " + category + " items in this city." %>
  		<%= "Suggest a change!" %>
  
negative.code: <div class="info">
  <% @city.bins.each do |bin| %>
  	<% category = 'Paper' %>
  	<% ordered = bin.items.select { |item| item.category.name == category }.sort_by{|item| item.name} %>
  	<% if ordered.empty? %>
  		<%= "Sorry, there is no info about the " + category + " items in this city." %>
  		<%= "Suggest a change!" %>
  