DATAGRAPH-354 - Backported fix into 2.2.x.

Backport of commits 8b16f7f9e896fe340a2a8ea66ff3468c756f8e00 and 708fa6fea433248e06bb88b9b921fa8e4e31e635 to make sure we can run against Spring Data Commons versions 1.5.2 and better.
DATAGRAPH-390 - Prepare 2.2.3.RELEASE.

Moved changelog and related documents into the right position to be picked up by release build. Removed obsolete JavaDoc resources. Updated to Spring Data Build 1.0.5.RELEASE and Spring Data Core 1.5.3.RELEASE.