Minor documentation updates in dates.php
Changes index.php to dates cycle

- Adds includes in index.php
- Adds includes/index- files for index.php includes
        - faire
        - postfaire
        - premadrigal
	- ticketing
- Updates copy on includes/madrigal-premadrigal.php for selling
- Adds a couple of CSS rules for .bigger, used in
includes/index-ticketing.php