ISTWCMS-4571-4548: adding correct home link

templates/regions/region--header.html.twig

@@ -17,5 +17,6 @@
   'faculty': faculty,
   'classes': classes,
   'nav_items': main_menu,
-  'secondary_items': secondary_menu
+  'secondary_items': secondary_menu,
+  'home_link': home_link
 }%}

uw_fdsu_theme_resp.theme

@@ -5,6 +5,7 @@
  * Theme file for uw_fdsu_theme_resp.
  */
 
+use Drupal\Core\Url;
 use Drupal\file\Plugin\Field\FieldType\FileFieldItemList;
 use Drupal\image\Plugin\Field\FieldType\ImageItem;
 use Drupal\Core\Form\FormStateInterface;
@@ -66,6 +67,9 @@ function uw_fdsu_theme_resp_preprocess_region(&$variables) {
   // (i.e. faculty colour and get the correct class here).
   if ($region == "header") {
 
+    // Get the home page link.
+    $variables['home_link'] = Url::fromRoute('<front>')->setAbsolute()->toString();
+
     // Set the main menu variable.
     $variables['main_menu'] = \Drupal::service('uw_cfg_common.uw_service')->uwGetMenu('main', TRUE, TRUE);