fix clean() for arrays and user plugin list

classes/pref/prefs.php

@@ -950,7 +950,7 @@ class Pref_Prefs extends Handler_Protected {
 		foreach ($tmppluginhost->get_plugins() as $name => $plugin) {
 			$about = $plugin->about();
 
-			if ($about[3] ?? false) {
+			if ($about[3] ?? true) {
 
 				$checked = "";
 				$disabled = "";

include/functions.php

@@ -244,7 +244,7 @@
 	// this is used for user http parameters unless HTML code is actually needed
 	function clean($param) {
 		if (is_array($param)) {
-			return trim(array_map("strip_tags", $param));
+			return array_map("trim", array_map("strip_tags", $param));
 		} else if (is_string($param)) {
 			return trim(strip_tags($param));
 		} else {