Changes for OVPMS-1510 Transaction reversal suppression

git-svn-id: svn://svn.openvpms.org/openvpms/archetypes/branches/1.8-dev@6161 9e4fa352-aafb-0310-9071-df624684024b
Changes for OVPMS-951 Reminder notification via SMS

git-svn-id: svn://svn.openvpms.org/openvpms/archetypes/branches/1.8-dev@6167 9e4fa352-aafb-0310-9071-df624684024b