Password change history is broken

[djay]

Relies on skin overrides which is a bad idea and also not longer works in plone 5.

Options

1. Use a PAS password validation plugin and set it to the last one. This may ensure its only called when a new valid password has been entered?
   • con: if it works its still fragile
2. override the password panel form https://github.com/plone/plone.app.users/blob/master/plone/app/users/browser/passwordpanel.py.
   • con: what if someone else overrides it or it changes in the future?
3. Get a password changed event put into the core?
   • con: takes time and won't work for old versions