Allow specifying external links (bug #3392685)

plugins/links-direct.php

@@ -0,0 +1,17 @@
+<?php
+
+/** Avoid redirecting of external links through adminer.org and disclose the URL of installed Adminer to visited links
+* @link http://www.adminer.org/plugins/#use
+* @author Jakub Vrana, http://www.vrana.cz/
+* @license http://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
+* @license http://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
+*/
+class AdminerLinksDirect {
+	
+	function selectLink($val, $field) {
+		if (is_url($val)) {
+			return $val;
+		}
+	}
+	
+}