closing feature #4574
Search on a folder have been improved strongly and simplified.
Merge branch 'ney-feature4574' of git://github.com/NicolasEYSSERIC/Silverpeas-Components into NicolasEYSSERIC-ney-feature4574

Conflicts:
	kmelia/kmelia-war/src/main/java/com/stratelia/webactiv/kmelia/control/KmeliaSessionController.java