Hello. I done it. Please, review.
*https://issues.apache.org/jira/browse/IGNITE-5104 <https://issues.apache.org/jira/browse/IGNITE-5104>* - Refactor javadocs and annotations to single style PR: *https://github.com/apache/ignite/pull/1883/files <https://github.com/apache/ignite/pull/1883/files>* -- Best wishes, Amelchev Nikita
