Made -window rely on -[ETLayoutItem windowDecoratorItem] instead of retrieving the decorator by itself. Improved initialization to correctly set up the window  decorator on the last decorator.
Made -window rely on -[ETLayoutItem windowDecoratorItem] instead of retrieving
the decorator by itself. Improved initialization to correctly set up the window 
decorator on the last decorator.

git-svn-id: 9ecb4abd5286682cb4be416c220a46cccbbd44e6@3138 7b3f36aa-e6db-49c1-8b4c-66eac1997e64

etoile/EtoileUI,etoile/EtoileUI