return an empty FeatureCollection if no match, r=fredj (closes #500)
return an empty FeatureCollection if no match, r=fredj (closes #500)


git-svn-id: 8af3510caa0da55760593bee91f6642c197586ea@2711 25cca10d-0837-0410-9e4f-92b931fda1bc

mapfish/mapfish,mapfish/mapfish,mapfish/mapfish