Management center docs update
Merge pull request #3640 from emrahkocaman/mancenter-docs

Management center docs update
Reviewed man center doc updates.
change system wide property with config property
mancenter jcache integration docs
Merge pull request #3642 from emrahkocaman/mancenter-docs

mancenter jcache integration docs
Caches section under Management Section revised.
Merge pull request #3634 from asimarslan/feature/maintance-3.x/jcache2-client

JCache client refactor and cache close destroy re-impl
mbean fix