Features: 1) Add support for initializing Select2 dropdowns in autocomplete list filters;

Fixes: 1) Ensure proper functionality of Select2 initialization script for dynamic inputs;

Extra: 1) Add missing newline handling in template file.

core/templates/admin/autocomplete_list_filter.html

@@ -19,6 +19,12 @@
         {% endif %}
     </select>
 </div>
+
+<script>
+    (function ($) {
+        $('#id_{{ spec.lookup_kwarg }}').djangoAdminSelect2();
+    })(django.jQuery);
+</script>
 {% endblock %}
 
 {% block media %}