Uses custom date select widget for publication dates

bookwyrm/templates/widgets/select.html

@@ -0,0 +1,10 @@
+<div class="select">
+    <select
+        name="{{ widget.name }}"
+        {% include "django/forms/widgets/attrs.html" %}
+    >{% for group_name, group_choices, group_index in widget.optgroups %}{% if group_name %}
+        <optgroup label="{{ group_name }}">{% endif %}{% for option in group_choices %}
+        {% include option.template_name with widget=option %}{% endfor %}{% if group_name %}
+        </optgroup>{% endif %}{% endfor %}
+    </select>
+</div>