Add books to lists from the book page

bookwyrm/templates/lists/list.html

@@ -83,9 +83,10 @@
             </div>
             <div class="column">
                 <p>{% include 'snippets/book_titleby.html' with book=book %}</p>
-                <form name="add-book" method="post" action="{% url 'list-add-book' list.id %}">
+                <form name="add-book" method="post" action="{% url 'list-add-book' %}">
                     {% csrf_token %}
                     <input type="hidden" name="book" value="{{ book.id }}">
+                    <input type="hidden" name="list" value="{{ list.id }}">
                     <button type="submit" class="button is-small is-link">{% if list.curation == 'open' or request.user == list.user %}{% trans "Add" %}{% else %}{% trans "Suggest" %}{% endif %}</button>
                 </form>
             </div>