Feature #4142 : adding password services (including password rule management).

- adding new services to manage passwords by a centralized way (rules, checks, generation)
- adding new password WEB Services
- adding new Silverpeas JQuery plugin to manage passwords
- wiring user profile with the new Silverpeas JQuery Plugin
- wiring administration user creation and modification with the new Silverpeas JQuery Plugin
- wiring user CSV import with the new password checking services
- fixing some problems in user credential management
- wiring force password change with the new Silverpeas JQuery Plugin
- wiring password about to expire with the new Silverpeas JQuery Plugin
- wiring password expired with the new Silverpeas JQuery Plugin
- wiring reset password with the new Silverpeas JQuery Plugin
- removing parameters that become unused in property files
- modifying copyrights on login page
- taking in account feature #3995 which specify that some extra rules have to be mentioned to user even if these rules are not verifiable within Silverpeas password services
- wiring change password with the new Silverpeas JQuery Plugin
- updating some copyrights