AMQP-347: Restore Logs for Non-Normal Shutdown

Eliminate `throw e` so the container can restart if possible.
AMQP-346 Polish Docs - Message Rejection

JIRA: https://jira.springsource.org/browse/AMQP-346

Prior to RabbitMQ 2.7.0, rejected messages went to the back
of the queue; they now go to the front of the queue.

Update the reference document to reflect that.

Fix property name for `defaultRequeueRejected`.