(cherry picked from commit 16da5370)

Conflicts:
	app/inc/constants.php.template
	app/inc/init.php

+ Use this system to migrate from 0.8 to 0.9 (WIP)

* Use Smarty to split View and Controller on studs page (work in progress)
* Add field "active" to Poll
* And some other stuff...

* Store all informations about forms into an object "Form" stored in $_SESSION['form']
* Replace connection to database by PDO object
* Check if database is ready in bandeaux.php file

condition is based on the number of languages configured

bug correction on email notification (using '$dsondage->titre' in adminstuds.php)

deplace config.inc.php file from root to app/inc dir. Allow access from anywhere and not only from a file present in root dir.

Modification des appels de function.inc.php (ajout dans init) pour être accessible par toutes les pages