This could be a surprise to users. If the password changes, we should make it very clear that token_auth will change too.
(In [4708]) fixes #2430 warn user before changing a password
Currently, users don't realize that token_auth will change if they change password.
Reopening, because I think the same popup should be displayed when the password is changed via the "Settings" page by the user itself.
(In [4934]) fixes #2430 show change password confirm on users settings page