latency of BD operations when loading a big number of messages.

batchNetwork consumers, cf. JMQ-184).

JORAM-359).

 - Sort the list of loaded messages to optimize insertion in Queue list.
 - Avoid costly message list cleaning if not needed.

server initialization (JORAM-358).

and tests).

and tests).

5.15.0 value (same as 5.16.0).

Fix issue with tcp.test8.

public access to the password.