Setting RefreshOnLogon should also work for Initiators

Up to now, the setting RefreshOnLogon will only refresh the message store for Acceptors.

The .NET and C++ implementations do not have this restriction.

Use case: when adding a dynamic session and changing the sequence number via JMX this apparently works but when Logon is initiated it is done with sequence number 1 again.

NB: probably documentation needs to be adapted also.