Eliminate some unnecessary screen output
WIP
Update README.rst
Move Python environment setup stuff over from infocus-common
WIP
Work on update_db_properties.py
Add last_transaction_date
WIP update_db_properties.py
WIP update_db_properties.py
Default to Python 3.3

Use PostgreSQL peer authentication
Move query specs to config
Simplify config code

Make --config-file optional; default to ~/.infocus/sandicor.ini
Work on updating properties in the database

Includes:

 - Add last_transaction_when column
Download new properties
Add print_properties_file.py script

Includes:

 - Refactor update_db_properties.py
Implement --limit command line argument for download_properties.py
Use shutil.copyfileobj to conserve memory when downloading properties
Update print_properties_file.py

Includes:

 - Refactor common.yield_properties to only open field mapping file once.
Log total number of records processed by update_db_properties.py
Add finished log message to download_properties.py