Fix the Bug#4237 [ https://sourceforge.net/p/phpmyadmin/bugs/4237/  ]

Resolve redirect problem. [See full details here https://sourceforge.net/p/phpmyadmin/bugs/4237/#69c9 ]

Check presence of ['HTTP_REFERER'] in url.php redirects.

Redirect at browser-side.

Test token safe PMA_linkURL()