Copyedited the Getting Started section

copyedited the focus for readability, not for content. Will ask Sedar
any questions on content.
Merge branch 'master' of https://github.com/hazelcast/hazelcast
again JCache documentation
Jetty Session Replication doc
merge with up-stream
Minor clean ups.
Reviewed newly added 2 FAQ items
moving some methods of CacheRecordStore to AbstractCacheRecordStore
Merge remote-tracking branch 'origin/feature/jcache' into feature/jcache

Conflicts:
	hazelcast/src/main/java/com/hazelcast/cache/impl/AbstractCacheRecordStore.java
	hazelcast/src/main/java/com/hazelcast/cache/impl/CacheRecordStore.java
Reviewed JettySessionReplication section.
Updated Revision History

Added Jetty related section information.
started jcache configuration docs
started jcache configuration docs
Merged in local stash
Typo correction.
Added 2 todos to JCache
Changed intro sentence of JCache
jcache documentation
jcache documentation
JCache documentation