IGNITE-5104 - ready for review.

[Nikita Amelchev]

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>*

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Best wishes,
Amelchev Nikita