Bug 1801843: Need to pass thru the $cleanurlbase string

So that it appears above the field for the 'Page URL' field on page
settings screen

behatnotneeded

Change-Id: Iace84c2ffe9cb6a9635d577cfe9e32e4e3f9ecbe
Signed-off-by: Robert Lyon <robertl@catalyst.net.nz>
(cherry picked from commit 0a716cbf)

htdocs/view/editlayout.php

@@ -303,7 +303,7 @@ function get_basic_elements() {
 }
 
 function get_advanced_elements() {
-    global $view, $urlallowed, $group, $institution, $USER;
+    global $view, $urlallowed, $group, $institution, $USER, $cleanurlbase;
 
     $formatstring = '%s (%s)';
     $ownerformatoptions = array(