(cherry picked from commit 6481de43)

There is no reason to limit the caracters that can be used in the name.
Thus, removing the regex.

Fix #97

	- Also added possibility for the poll's maker to edit this hidden results option.

	- The goal here is to prevent the losing of the choices by having a bad name.
	- This is a POC, there is probably some cleaning before merge

New files :
* classic_poll.js -> loaded on page choix_autre.php
* date_poll.js -> loaded on page choix_date.ph
* framadatepicker.js -> loaded on pages that need the date picker