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