Add Password::Combination
This is a simple implementation of Password::Combination :
- Loads the Password:: version of all UserDB:: modules declared in a combination rule, if available
- When a password change is requested by a logged in user or by the mail reset plugin, the _userDB session key is used to dispatch the request to the correct password module
- overrides used by the password module are the ones declared by the UserDB module
Solves #714 (closed) and #716 (closed) in common use cases ([LDAP1] or [LDAP2]
), ifs should be supported, and
s are not for the moment