ISTWCMS-5368 Add 'Reference author: ' to beginning of title on browsers tab of contributor page

uw_fdsu_theme_resp.theme

@@ -44,6 +44,12 @@ function uw_fdsu_theme_resp_preprocess_html(&$variables) {
       $variables['#attached']['library'][] = 'uw_fdsu_theme_resp/user.login';
       break;
 
+    // The header/page title on contributors listing page browser
+    // tab shows "Reference author: " in front of the author's name.
+    case 'entity.bibcite_contributor.canonical':
+      $variables['head_title']['title'] = t('Reference author:') . ' ' . $variables['head_title']['title'];
+      break;
+
   }
 }