update adminer and adapt plugins to new version

adminer-plugins/AdminerFrames.php

@@ -0,0 +1,28 @@
+<?php
+
+/** Allow using Adminer inside a frame (disables ClickJacking protection)
+ * @link https://www.adminer.org/plugins/#use
+ * @author Jakub Vrana, https://www.vrana.cz/
+ * @license https://www.apache.org/licenses/LICENSE-2.0 Apache License, Version 2.0
+ * @license https://www.gnu.org/licenses/gpl-2.0.html GNU General Public License, version 2 (one or other)
+ */
+class AdminerFrames {
+	/** @access protected */
+	var $sameOrigin;
+
+	/**
+	 * @param bool allow running from the same origin only
+	 */
+	function __construct($sameOrigin = false) {
+		$this->sameOrigin = $sameOrigin;
+	}
+
+	function headers() {
+		if ($this->sameOrigin) {
+			header("X-Frame-Options: SameOrigin");
+		} elseif (function_exists('header_remove')) {
+			header_remove("X-Frame-Options");
+		}
+	}
+
+}