API: Users cannot change their passwords

[mrwunderbar666]

thanks @iwellaway for reporting this

[iwellaway]

Thanks @mrwunderbar666, the password is now updating but it still gives a 500 error if the old password is incorrect.

[mrwunderbar666]

thanks! you should now get a 401 error, in case the old password doesn't match, or the new password has a problem

[iwellaway]

Thanks Paul, all working now.

Ian