spring doc initial version
updated spring doc
removed sample spring-data code and moved them to hazelcast-code-samples repo
concurrency package requests made security-interceptor compliant
Merge branch 'master' of github.com:hazelcast/hazelcast into concurrency-security-interceptor
check-style
Added unittest for #issue2816 and missing return statement
permission and security interceptor fix
updates after comments
fix socket options defaults
Socket options java doc
Merge pull request #2866 from asimarslan/features/master/socketOptionDefaults

fix socket options defaults
Merge pull request #2874 from gurbuzali/concurrency-security-interceptor

Concurrency security interceptor
Merge pull request #2869 from mesutcelik/springDataRemoval

removed sample spring-data examples code
Fixed parsing errors for documentation chapter 4/5
Merge pull request #2875 from noctarius/docs-fix-chapter-4-5

Fixed parsing errors for documentation chapter 4/5
Merge pull request #2873 from noctarius/unittest-issue-2618

Added unittest for #issue2618 and missing return statement
Merge pull request #2868 from mesutcelik/springdoc

Spring Integration Doc Update
Merge branch 'master' of https://github.com/hazelcast/hazelcast
small cleanup