Web services test client

From MoodleDocs

Admins can simulate external access to their own Web Services using the URL <http://yourmoodlesite.org/admin/webservice/testclient.php.

Warning: The test client is not clever! It lets you choose disabled/unavaibled functions (however it behaves well and produces an error in these case). This is normal because clients are going to be bad sometimes so we needed to simulate a bad client!