Be able to make more complete passwords policy

Hi,

I'm used to decide password policies with my customers as it is possible in many professional systems and applications :

• minimum characters for the passwords,
• put L lower cases,
• put U upper cases,
• put N numerals,
• put S signs (as -, =, !, ?, etc.)
• change password every M months (know if and when a customer has changed it),
• new password shall be different from the old one

So to summarize, it would be great if ISPConfig allowed to :

• choose a minimum password size,
• choose how many lower cases, upper cases, numbers, signs must be in the passwords,
• be able to check when a user (mail and any user) has changed his password,
• be able to check if the new password must be different from the old one.

Thanks for all the hard work already done ! Daggett