Fixed out of bounds exception on inserting Show Development Menu with vertical  menu (typically if EtoileMenus bundle isn't loaded).
Fixed out of bounds exception on inserting Show Development Menu with vertical 
menu (typically if EtoileMenus bundle isn't loaded).

git-svn-id: 9ecb4abd5286682cb4be416c220a46cccbbd44e6@3194 7b3f36aa-e6db-49c1-8b4c-66eac1997e64

etoile/EtoileUI,etoile/EtoileUI