123163 jvonka: RA-706, ACE-5113: Platform - OwnableService - when setting owner check that username currently exists (at time of property update)
- update Nodes API (remove extra check)
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@126531 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261