add option to migrate an provenance graph into a remote one on the fly
add option to migrate an provenance graph into a remote one on the fly

Caleydo/ordino,Caleydo/ordino,datavisyn/tdp_core,datavisyn/tdp_core,Caleydo/ordino,Caleydo/ordino,datavisyn/tdp_core,datavisyn/tdp_core