fixes for dynamic generation of column no's
Eliminated hardcoded table IDs from sample data file. Other minor code cleanup/readability improvements.
Merge pull request #1 from fjg-conflux/unhardcode

Eliminated hardcoded table IDs from sample data file. Other minor code cleanup/readability improvements.
Merge pull request #21 from yashodha/CiviVolunteer

fixes for dynamic generation of column no's