Description
The Active Period is a normal Interval which has properties like any other.
Ramp Up, Recovery, and Notification are derived from xcal Properties and can be added wherever Properties are used (in the Interval)
EventBase (and the derived signal types) have a choice of using xcal:vcalendar or eitc:vcalendar, which respectively get filled with xcal:intervals or eitc:intervals
wip2:
Alligned Payloads w/ most recent UML, including adding Avail service family
Added ResponseType from WD24
Typed many elemental IDs, moved defintions for many from Payloads to Type Defintions
