fixing bug #5050
when updating WYSIWYG content, updater was not set so notifications were sent under creator identity
fixing bug #5043
when HTTP destination is not defined, user session is no more invalidated.
Now, user is redirected to 'error404' page.
fixing bug #5056
setting calculated name into translations
fixing another bug : paste was no more possible on root

Conflicts:
	lib-core/src/main/java/com/stratelia/webactiv/beans/admin/Admin.java
fixing bug #4920
allowing to specify max length on 'textarea' field (except by UI)
defining constant String as parameter name and using it
by default, now 'textarea' field is higher and wilder...