Added quick link to parts list to the admin pages.

Fixes issue #55.

templates/AdminPages/SupplierAdmin.html.twig

@@ -10,4 +10,12 @@
         {{ form_row(form.shipping_costs) }}
         {{ form_row(form.comment) }}
     </div>
+{% endblock %}
+
+{% block edit_title %}
+    {% trans %}supplier.edit{% endtrans %}: <a href="{{ path('part_list_supplier', {'id': entity.id}) }}">{{ entity.name }}</a>
+{% endblock %}
+
+{% block new_title %}
+    {% trans %}supplier.new{% endtrans %}
 {% endblock %}