Added NL translation

Fix for english
'Are you sure you want to delete IP list %2',  replaced with %s

Author: jaapmarcus

web/inc/i18n/en.php

@@ -796,7 +796,7 @@
     'BLACKLIST' => 'BLACKLIST',
     'IPVERSE' => 'IPVERSE',
     'IPSET_CREATED_OK' => 'IP list created successfully',
-    'DELETE_IPSET_CONFIRMATION' => 'Are you sure you want to delete IP list %2',
+    'DELETE_IPSET_CONFIRMATION' => 'Are you sure you want to delete IP list %s',
     '1 Ipset list' => '1 IP list',
     '%s Ipset lists' => '%s IP lists',
     'There are currently no IP lists defined.' => 'There are currently no IP lists defined.',