Add 5.3.3 to travis-ci

Signed-off-by: crynobone <crynobone@gmail.com>
Some issue with PHP 5.3.3, disable it for now

Signed-off-by: crynobone <crynobone@gmail.com>
Add Event to hook on user register

Signed-off-by: crynobone <crynobone@gmail.com>
Should ignore if user_id is empty

Signed-off-by: crynobone <crynobone@gmail.com>
 is not defined yet

Signed-off-by: crynobone <crynobone@gmail.com>