Add support for counting files and file size to quick_overview.py
Add support for counting files and file size to quick_overview.py


Former-commit-id: ca9d540ed033aa8644c374cc095b140e2f2f2921
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG