try to handle missing sources better. 
try to handle missing sources better. 
pudo/spendb,USStateDept/FPA_Core,spendb/spendb,nathanhilbert/FPA_Core,openspending/spendb,USStateDept/FPA_Core,pudo/spendb,CivicVision/datahub,openspending/spendb,USStateDept/FPA_Core,johnjohndoe/spendb,spendb/spendb,CivicVision/datahub,pudo/spendb,nathanhilbert/FPA_Core,spendb/spendb,CivicVision/datahub,johnjohndoe/spendb,nathanhilbert/FPA_Core,johnjohndoe/spendb,openspending/spendb