sql_mode is not retained when dumping triggers

[Kenny Gryp]

The sql_mode is not retained when loading the triggers (probably same with stored procs). This causes them to behave differently.

Maybe we should also include the sql_mode it was dumped from before creating the triggers:
```
SET @PREV_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT;
SET @PREV_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS;
SET @PREV_COLLATION_CONNECTION=@@COLLATION_CONNECTION;
SET character_set_client = latin1;
SET character_set_results = latin1;
SET collation_connection = latin1_swedish_ci;
CREATE DEFINER=`user`@`%` TRIGGER TABLE AFTER INSERT ON TABLE
FOR EACH ROW BEGIN
```