Add tag based filtering

ram/portal/templates/consists.html

@@ -13,8 +13,8 @@
             <p class="card-text"><strong>{{ c }}</strong></p>
             {% if c.tags.all %}
             <p class="card-text"><small>Tags:</small>
-             {% for t in c.tags.all %}<span class="badge bg-primary">
-              {{ t.name }}</span>{# new line is required #}
+              {% for t in c.tags.all %}<a href="{% url 'filtered' _filter="tag" search=t.slug %}" class="badge rounded-pill bg-primary">
+              {{ t.name }}</a>{# new line is required #}
               {% endfor %}
             </p>
             {% endif %}