Ticket #241 (task)

Code

      try {
        getCal().getSpecialCalendar(u,
                                    BwCalendar.calTypeInbox,
                                    true,
                                    PrivilegeDefs.privReadFreeBusy);
      } catch (CalFacadeAccessException cae) {
        getCal().getSpecialCalendar(u,
                                    BwCalendar.calTypeInbox,
                                    true,
                                    PrivilegeDefs.privScheduleFreeBusy);
      }

is probably wrong. Require read freebusy access. Still need to resolve how to handle access.

Also move it all into scheduling and use granulate freebusy code already there.