OO-763: don't use the container as reference for collection of components but an interface instead, break the inheritence of Panel and flatted it

OO-364: make the access to the autocomplete search of users configurable in the standard controller and in the forum

OO-291: implement the wizards to import/choose new member for courses, implement a flexi version of the suer search, implements a flexi version of the auto completer

--HG--
branch : bps