This commit adds the ability for site administrators to mark users'
passwords as expired. Note that this commit does not add any client side
interface to mark a user's password as expired.
The following changes are introduced in this commit:
1. Adds a `user_passwords` table and `UserPassword` model. While the
`user_passwords` table is currently used to only store expired
passwords, it will be used in the future to store a user's current
password as well.
2. Adds a `UserPasswordExpirer.expire_user_password` method which can
be used from the Rails console to mark a user's password as expired.
3. Updates `SessionsController#create` to check that the user's current
password has not been marked as expired after confirming the
password. If the password is determined to be expired based on the
existence of a `UserPassword` record with the `password_expired_at`
column set, we will not log the user in and will display a password
expired notice. A forgot password email is automatically send out to
the user as well.
Zeitwerk simplifies working with dependencies in dev and makes it easier reloading class chains.
We no longer need to use Rails "require_dependency" anywhere and instead can just use standard
Ruby patterns to require files.
This is a far reaching change and we expect some followups here.
We were blocking user registrations with same username and password,
but allowing usernames to be changed to be same as password later.
Also disallow names to be the same as password.
This reduces chances of errors where consumers of strings mutate inputs
and reduces memory usage of the app.
Test suite passes now, but there may be some stuff left, so we will run
a few sites on a branch prior to merging
