Users can change their own passwords, the process involves filling out a form with their existing password, creating a new password and repeating the new password (for confirmation)

Like all the other user functions, web/users/index.php can be used to run the function, for convenience web/users/change_password.php can be used to show the form.

The url the form is posted to is web/users/index.php

Note that the only accepted method is POST. (for security reasons)