fix bug for #887, that is cannot query multi partitions of one datasource on realtime node.
Modify according to fjy's review, add reformatting according to eaclipse_formatting.xml
Reformatting using intellij_formatting.jar
use fixed-size mapdb cache to avoid heap growing uncontrollably
moved methods to java-util
Add Node.js client to Community Libraries
Broker config small fix
Merge pull request #937 from 7eggs/doc-add-nodejs-lib

Add Node.js client to Community Libraries
Merge pull request #938 from 7eggs/doc-fixes

Broker config small fix
Merge pull request #894 from zhaown/fix-query-realtime-with-multi-partition

bugfix for #887
remove unused but required parameter
Merge pull request #941 from metamx/fix-event-receiver-firehose

remove unused but required parameter
Merge branch 'master' into onheap-incremental-index

Conflicts:
	server/src/main/java/io/druid/segment/realtime/RealtimeManager.java