rif40_getGeoLevelFullExtent etc

SELECT rif40_xml_pkg.rif40_getGeoLevelFullExtent('SAHSU', 'LEVEL2');
SELECT rif40_xml_pkg.rif40_getGeoLevelFullExtentForStudy('SAHSU',
'LEVEL4', 1);
SELECT rif40_xml_pkg.rif40_getGeoLevelBoundsForArea('SAHSU', 'LEVEL2',
'01.004');

Fixed gid == gid_rowindex.
rif40_geo_pkg still needs to be fixed
Fixes to rif40_get_geojson_as_js