124538 jvonka: RA-896: Nodes API - fix list children filter
- return all results if no filter specified
- return 400 if both isFile and isFolder are true, or nodeType is specified along with isFile or isFolder
git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@126563 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261