Allow "rebasing" of materialized path resolution for less calls to googles api
Allow "rebasing" of materialized path resolution for less calls to googles api

cosenal/waterbutler,RCOSDP/waterbutler,CenterForOpenScience/waterbutler,chrisseto/waterbutler,Ghalko/waterbutler,TomBaxter/waterbutler,hmoco/waterbutler,felliott/waterbutler,rafaeldelucena/waterbutler,kwierman/waterbutler,rdhyee/waterbutler,Johnetordoff/waterbutler,icereval/waterbutler