Implemented linker - class for admin_settings.php (templates automatic replace only)

Signed-off-by: Florian Aders (EleRas) <eleras@froxlor.org>

templates/Classic/admin/phpconfig/overview_edit.tpl

@@ -1,5 +1,5 @@
 $header
-	<form action="$filename" method="post">
+	<form action="{$linker->getLink(array('section' => 'phpsettings'))}" method="post">
 		<input type="hidden" name="s" value="$s"/>
 		<input type="hidden" name="page" value="$page"/>
 		<input type="hidden" name="action" value="edit"/>
@@ -65,4 +65,4 @@ $header
 	</table>
 	<br />
 	<br />
-$footer
+$footer