- Ajout d'un editeur de markdown
    - On garde le formattage des espaces
    - On empeche l'utilisateur de mettre du html

	- Also added Framadate\Message à link attribute
	- Added local anchor #edit with vote edition
	- For now, when the poll owner check the new edit option (ie: "Votes are editable solely by their owner"), users get their update link on vote creation

	- Changed the smarty modifier poll_url to a function and added the vote_id parameter
	- Modified accordingly all poll_url occurence in templates
	- Added htaccess.txt to be sure to keep poll's URL changes up to date
	- Escaped some templates output in order to avoid to broke HTML
	- Using vote's uniqId instead of vote's id when it's needed

(cherry picked from commit 16da5370)

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

* 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

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