map store initialization refactored
use writable map config
refactoring fixes
store operation should be retried and done eventually after a temporary map store failure
test improvement
remove unneeded method
Reviewed the copyedited Security and Performance

chapters.
Merge pull request #4051 from ahmetmircik/improvement/3.4/refactorMapStoreInit

Map store initialization in map container refactored
HazelcastConnection relies on HazelcastInstance methods,fixes #2997
use mapstore context stop
converted some unsupported methods into supported methods
Hazelcast Clusters chapter growing.
added some explanation to the exceptions
Merge pull request #4058 from ahmetmircik/fix/3.4/storeRetry

Store operation should be retried and done eventually after a temporary failure
Hazelcast Clusters chapter, a bit more content.
some naming fixes
checkstyle fixes
Merge pull request #4072 from mesutcelik/fix/3.4/2997

HazelcastConnection relies on HazelcastInstance methods
Fix default merging policy in sample xml