Message ordering no longer utilises an orderList.  Instead the last ordering sequence that applied to a destination is stored in a map with the destinations address, subsequent messages include this value to ensure that no prior messages that apply to a given destination are missed.  Each time a new message is received by the ordering boxes, the old sequence is stored.
Modified version of the TestToaOrder test.  This version allows time for box members to be discovered and prevents messages being sent to boxMembers