Merge remote-tracking branch 'origin/mappings'
changed back log level
spelling
updated doc
updated doc
doc
doc
doc
doc
minor error text change
ack on custom command, use timeout on initial task fetch
parameter for writing bulk error as debug and not warn
Merge remote-tracking branch 'refs/remotes/origin/master' into mappings

Conflicts:
	src/main/java/org/elasticsearch/river/rabbitmq/RabbitmqRiver.java