Updated to Dojo 1.9.1.
Fixes COMETD-470 (Seti leaks userIds).

Now Seti sends an additional "alive" field during start and stop, so that remote Setis
know if the message belong to a newborn or dying Seti.
Only if it is a newborn, Seti pushes its associations to it.
Reducing logging level for Spring.
Cleaned up usage of ClientTransport's terminate() and reset().