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: b4972684af552ff03dbdb66494999cc45b89e20d
DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG,DavidAce/DMRG