Added syncevolution full compatibility in class.boical.inc.php
This patch adds an entry in the setSupportedFields funtion and be able to syncronize participants, owner and categories from an event into Evolution using Syncevolution.
patch contributed by Antoni Matamalas
class.boical.inc.php
285: handle exceptions field on export (delimiter changed to ";")
295: handle TRANSP value (0 or 1) on export
554: handle exceptions field on import
568: handle TRANSP value (0 or 1) on import
774-777: set supported fields for recur_exceptions and non_blocking
added support for handling non blocking events for vcal(1.0) and ical(2.0)
