PrestaShop/PrestaShop — pull request #2040 by 123monsite-regis (2014-08-07 15:10:44+00:00)
Title: [+] FO+BO Force customers to use strong password allowed

In the admin>preferences>customer, new options are added for customer : Password min lenght , Password max lenght and Password rule.
Rules are |Accept all = same as now | , |Alpha and number required|, and |Alpha, number and special required|.
those options are considered in front on autentication and forgot password.