[#567] Enable completion endpoint, limit output
[#567] Enable completion endpoint, limit output

openspending/spendb,openspending/spendb,openspending/spendb,USStateDept/FPA_Core,johnjohndoe/spendb,spendb/spendb,johnjohndoe/spendb,USStateDept/FPA_Core,nathanhilbert/FPA_Core,CivicVision/datahub,nathanhilbert/FPA_Core,johnjohndoe/spendb,spendb/spendb,USStateDept/FPA_Core,pudo/spendb,CivicVision/datahub,CivicVision/datahub,spendb/spendb,nathanhilbert/FPA_Core,pudo/spendb,pudo/spendb