Added missing italian lang files

interface/web/admin/lib/lang/it.lng

interface/web/admin/lib/lang/it_dbsync.lng

interface/web/admin/lib/lang/it_dbsync_list.lng

interface/web/admin/lib/lang/it_filesync.lng

interface/web/admin/lib/lang/it_filesync_list.lng

interface/web/admin/lib/lang/it_firewall.lng

interface/web/admin/lib/lang/it_firewall_list.lng

interface/web/admin/lib/lang/it_groups.lng

interface/web/admin/lib/lang/it_groups_list.lng

interface/web/admin/lib/lang/it_language_add.lng

interface/web/admin/lib/lang/it_language_complete.lng

interface/web/admin/lib/lang/it_language_edit.lng

interface/web/admin/lib/lang/it_language_export.lng

interface/web/admin/lib/lang/it_language_import.lng

interface/web/admin/lib/lang/it_language_list.lng

interface/web/admin/lib/lang/it_server.lng

interface/web/admin/lib/lang/it_server_config.lng

interface/web/admin/lib/lang/it_server_config_list.lng

interface/web/admin/lib/lang/it_server_ip.lng

interface/web/admin/lib/lang/it_server_ip_list.lng