fix card_multiselect filtering and quantity controls

theme/templates/trades/trade_offer_delete.html

@@ -15,15 +15,9 @@
   </h2>
 
   <p>
-    <strong>Status:</strong> {% if object.is_active %}Open{% else %}Closed{% endif %}
+    <strong>Status:</strong> {% if object.is_closed %}Closed{% else %}Open{% endif %}
   </p>
 
-  {% if messages %}
-    {% for message in messages %}
-      <div class="alert {{ message.tags }}">{{ message }}</div>
-    {% endfor %}
-  {% endif %}
-
   <p class="mb-4">
     {% if action == 'delete' %}
       Are you sure you want to delete this trade offer? This will permanently remove the offer.