Additional email address per user account support

[tobiaseigen]

你好，Leon！这个流程确实不适合胆小的人，看起来你走对了方向。确实，这里有一些用户体验（UX）功能会很有用，可以用来管理用户的主要和次要电子邮件地址。这个链接或许能帮到你——它也曾帮过我！

Rake task for merging users

Sure, this can be done in the rails console within the container. rails c # restrict to secondary emails, just in case you try to delete the wrong email UserEmail.where(email: "foo@example.com", primary: false).destroy_all # probably not needed, but better safe than sorry EmailToken.where(email: "foo@example.com").destroy_all