[MDW-471] Add configuration for broken autocomplete.

Author: Calystod

templates/apps/drupal/drupal.j2

@@ -412,3 +412,10 @@ location ~* ^.+\.php$ {
 location = /monitor/index.php {
   fastcgi_pass   phpcgi;
 }
+
+###
+### Rewrite legacy requests with /index.php to extension-free URL.
+###
+if ( $args ~* "^q=(?<query_value>.*)" ) {
+  rewrite ^/index.php$ $scheme://$host/?q=$query_value? permanent;
+}