Fix : classes that end with "s" have and identical default set without another "s"
Html : Collection / map tables headers don't accept word wrap
Added Hierarchical trait for business objects needing a template for this
Null objets : should not save linked objects if null (does not work at the moment)
Dao : Fix don't write null linked objects
HTML Edit widget : fix collections/maps indices when lines are removed and added
jquery slideshow plugin : added previous/next button + stop slideshow on mouse hover
Fix Html_Builder_Collection input names when on sub-objects (added property name prefix)
Display @password values as '*******' instead of their stored (ie crypted) value