Some minor updates for test files

www/admin/l10n_test.php

@@ -0,0 +1,17 @@
+<?php
+
+// debug for L10n issues in php 7.3
+
+// namespace test
+ob_start();
+
+$lang = 'en_utf8';
+
+// admin class tests
+require 'config.php';
+$l = new CoreLibs\Language\L10n($lang);
+
+echo "OK<br>";
+
+ob_end_flush();
+// __END__