Merge branch 'patch-5607-search-child-domain' into 'stable-3.1'

Clicking from search result alias/child domain failed to open, fixes #5607

See merge request ispconfig/ispconfig3!1026

Author: Till Brehm

interface/web/capp.php

@@ -43,7 +43,7 @@
 }
 
 if(!preg_match("/^[a-z]{2,20}$/i", $mod)) die('module name contains unallowed chars.');
-if($redirect != '' && !preg_match("/^[a-z0-9]+\/[a-z0-9_\.\-]+\?id=[0-9]{1,9}$/i", $redirect)) die('redirect contains unallowed chars.');
+if($redirect != '' && !preg_match("/^[a-z0-9]+\/[a-z0-9_\.\-]+\?id=[0-9]{1,9}(\&type=[a-z0-9_\.\-]+)?$/i", $redirect)) die('redirect contains unallowed chars.');
 
 //* Check if user may use the module.
 $user_modules = explode(",", $_SESSION["s"]["user"]["modules"]);