extend migration script for 1.4.0 to fix #13

migration_1.4.0.sql

@@ -1,3 +1,14 @@
 
 ALTER TABLE `ddns_token`
     ADD COLUMN `server_id` int(11) unsigned NOT NULL DEFAULT 0 AFTER id;
+
+select @server_id := server_id from server
+where active=1 and dns_server=1
+order by server_id
+limit 1;
+
+update ddns_token set server_id = @server_id
+where server_id = 0;
+
+update sys_datalog set server_id = @server_id
+where server_id = 0 and dbtable = 'ddns_token';