Copy only complete lumi sections from in_progress folder
This would allow us to determine how many events we took for the EoR file. The idea is that if we crash during a given lumi section we would disregard that entire LS. If we do this we can then generate the EoR file from the EoLS files, at least in principle. This can of course also be done over lumi nibbles, as long as we can guarantee reasonable bookkeeping.