Fix leaking empty concurrent hashmaps
2343 - extracted cleanup to function
added StripedExecutor to the WanReplicationService to maintain order by dispatching same partition packets to the same thread.
 Marks a randomly failing test as ProblematicTest. Cleanup of test class (get rid of warnings and unwanted final variables).
2343 - checkstyle fix
Fixed the failing test by using assertTrueEventually as recommended by ahmetmircik.
2343 - fix comment
QueueIterator::remove throws UnsupportedOperationException
Merge pull request #2948 from eminn/iterator/remove

QueueIterator::remove throws UnsupportedOperationException
Spaces added for better looking PDF
New IMap features headline information added
Added new lines for better looking PDF
Formatting correction.
Forced multiple line breaks between different files while merging them to make markdown separation between chapters
fixes #2659
ceils nanosecond values to 1 ms to prevent no eviction case
fixes #2659
ceils nanosecond values to 1 ms to prevent no eviction case
small doc fixes
update on versioncheck default value is set to source. It will be updated as maven in release process
Merge branch 'master' of github.com:hazelcast/hazelcast
update on version check : manifest to property