anchor.diff:        <h6>Partier</h6>
         <ul class="nav multiple-select">
           <% parties.each do |party| %>
  -          <li><%= link_to party.name, promises_path %></li>
  +          <li><%= link_to party.name, promises_path(category_id: @category_id, subcategory_id: @subcategory_id, party_slug: party.slug) %></li>
           <% end %>
         </ul>
       </div>
  
positive.code:       <h6>Hovedkategorier</h6>
        <ul class="nav multiple-select">
        <% categories.each do |category| %>
          <li><%= link_to category.human_name, promises_path(category_id: category.id) %></li>
        <% end %>
        </ul>
      </div>
  
negative.code:       <ul class="nav multiple-select">
          <% categories.each do |category| %>
            <% category.children.each do |subcategory| %>
              <li><%= link_to subcategory.human_name, promises_path(category_id: category.id, subcategory_id: subcategory.id, party_slug: @party_slug %></li>
            <% end %>
          <% end %>
        </ul>
  