Fix DocumentTemplateQuery.selects(IMObjectReference)

git-svn-id: svn://svn.openvpms.org/openvpms/vpms/branches/1.8-dev@6238 9e4fa352-aafb-0310-9071-df624684024b
 Fix to filter preferred suppliers on name

git-svn-id: svn://svn.openvpms.org/openvpms/vpms/branches/1.8-dev@6244 9e4fa352-aafb-0310-9071-df624684024b