Fix error Undefined variable: availableLanguages in footer.ctp

2018-08-08 10:28:31 Notice: Notice (8): Undefined variable: availableLanguages in [/home/comptoir/Comptoir-srv/src/Template/Element/Pages/footer.ctp, line 36] 
Request URL: /files/Softwares/Module%20Rendez-Vous/avatar/lutece-350.png