Merge branch 'stable-3.1' of git.ispconfig.org:ispconfig/ispconfig3 into stable-3.1

install/update.php

@@ -190,7 +190,7 @@ $do_backup = $inst->simple_query('Shall the script create a ISPConfig backup in
 if($do_backup == 'yes') {
 
 	//* Create the backup directory
-	$backup_path = '/var/backup/ispconfig_'.@date('Y-m-d_H-i');
+	$backup_path = '/var/backup/ispconfig_'.$conf['hostname'].'_'.@date('Y-m-d_H-i');
 	$conf['backup_path'] = $backup_path;
 	exec("mkdir -p $backup_path");
 	exec("chown root:root $backup_path");

interface/web/dns/form/dns_txt.tform.php

@@ -86,7 +86,7 @@ $form["tabs"]['dns'] = array (
 					'type' => 'TOLOWER')
 			),
 			'validators' => array (  0 => array ( 'type' => 'REGEX',
-					'regex' => '/^[a-zA-Z0-9\.\-\_]{0,255}$/',
+					'regex' => '/^(\*\.|[a-zA-Z0-9\.\-\_]){0,255}$/',
 					'errmsg'=> 'name_error_regex'),
 			),
 			'default' => '',