Bug 1567152: Include missing property $homeurl for each group to display.

behatnotneeded

Change-Id: I673a19d8c7f90f330005acfe2a22fea696b38092

htdocs/lib/group.php

@@ -1550,6 +1550,7 @@ function group_prepare_usergroups_for_display($groups, $returnto='mygroups') {
         $group->editwindow = group_format_editwindow($group);
 
         $group->settingsdescription = group_display_settings($group);
+        $group->homeurl = group_homepage_url($group);
     }
 }