add 5 minute timeout to query operation when running parallel
tiny refactoring
Adding a new chapter (Cluster Management).
fired entry event should include old value after remove if same operation
Merge pull request #4035 from ahmetmircik/improvement/3.4/addTimeOut2QueryOperations

Adds timeout to QueryOperation
Adds a configurable work around for the sector imbalance problem.
the selectorIndexPerHostMap is now a hashmap and created lazily + added some serve warning when feature enabled
Merge pull request #4042 from ahmetmircik/fix/3.4/removeIfSameEventOldValue2

Fired entry event should include old value after remove if same
Resolved some checkstyle issues
Merge pull request #4044 from pveentjer/fix/3.x/connection-imbalance

A workaround to prevent selector imbalance
It has to be removed once #4045 is fixed.
Refactored the backupaware invocations not to make use of a scheduledexecutor, but rely on period scanning of invocations
Cleanup
Removed a lot of unwanted locking
Fixed bug in the BasicInvocation; wrong type of field
More cleanup
Made response queue skipping configurable
Made response queue skipping configurable
Renamed the handle backup timeout thread