try/except for default http fetch; attempt DipperCache short-circut on default fetch; gaf-eco-mapping function no longer needed
try/except for default http fetch; attempt DipperCache short-circut on default fetch; gaf-eco-mapping function no longer needed

monarch-initiative/dipper,monarch-initiative/dipper,monarch-initiative/dipper,TomConlin/dipper,TomConlin/dipper