* Always store primary email address into email_address table and also the state
* Add lower_email to not convert email to lower as what's added
* Fix fixture
* Fix tests
* Use BeforeInsert to save lower email
* Fix v180 migration
* fix tests
* Fix test
* Remove wrong submited codes
* Fix test
* Fix test
* Fix test
* Add test for v181 migration
* remove change user's email to lower
* Revert change on user's email column
* Fix lower email
* Fix test
* Fix test
Lunny Xiao