Fix create trade offer flow and other related bugs

theme/templates/trades/trade_offer_confirm_create.html

@@ -0,0 +1,28 @@
+{% extends 'base.html' %}
+{% load static card_badge trade_offer_tags %}
+
+{% block title %}Confirm Trade Offer{% endblock title %}
+
+{% block content %}
+<div class="container mx-auto max-w-xl mt-6">
+  <h2 class="text-2xl font-bold mb-4">Confirm Trade Offer</h2>
+  <form method="post">
+    {% csrf_token %}
+    {# Re-create hidden inputs from POST data, except the preview button #}
+    {% for key, values in post_data.lists %}
+      {% for value in values %}
+        {% if key != "preview" %}
+          <input type="hidden" name="{{ key }}" value="{{ value }}">
+        {% endif %}
+      {% endfor %}
+    {% endfor %}
+
+    {% render_trade_offer dummy_trade_offer False False True %}
+
+    <div class="flex justify-between mt-4">
+      <button type="submit" name="edit" class="btn btn-secondary">Edit</button>
+      <button type="submit" name="confirm" class="btn btn-primary">Confirm Trade Offer</button>
+    </div>
+  </form>
+</div>
+{% endblock content %}