Implementation of delta BackupAwareEntryProcessor for JCache implementation
fixed checkstyle
Merge pull request #3930 from noctarius/jcache-backup-entryprocessor

Implementation of delta BackupAwareEntryProcessor for JCache implementation
Reviewed JCache chapter.

Conflicts:
	hazelcast-documentation/src/JCache.md
Resolving conflict
Resolving conflict.
Removed @Ignore annotation to see if it is still failing #3691
Minor correction and improvements.
Config Import and Jetty stuff added to New Feature

s section of Release Notes.
Minor styling corrections.
Fixed BasicCacheTest
Fixed cache destroy race condition
Removed @Repeat(100) from BasicCacheTest
Added Back Pressure item into New Features

just to have it as a reminder, when it is implemented fully in RC
releases.
merge with upstream