Client cleanup; lots of javadoc
Improved testing/javadoc/argument-checking for the ClientService
Improved ClientService javadoc
Minor checkstyle fixes in CLientServiceProxy
Added some @Overrides in LifecycleServiceImpl
fix for #3774
update for fix
new tests added
Merge pull request #3780 from bilalyasar/mbean

fix for #3774
ignored tests with missing features
end of life for ProblematicTest.class
Merge pull request #3790 from mesutcelik/problematicTestsAreGone

end of life for ProblematicTest.class
Merge pull request #3764 from pveentjer/cleanup/3.x/client-further-cleanup

Cleanup/3.x/client further cleanup
Minor multimap cleanup (alligning package layout with other modules)