126530 jkaabimofrad: Merged FILE-FOLDER-API (5.2.0) to HEAD (5.2) 123162 jvonka: ACE-5113: Platform - OwnableService - when setting owner check that username currently exists (at time of property update) git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/BRANCHES/DEV/5.2.N/root@126874 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261