specify "super csv" to indicate reference of parent csv in initialize
- added @attribute_to_column_name hash table in initialize
- update code to use function "column_name" instead of hardcoding name of header row within code
Revert "- added @attribute_to_column_name hash table in initialize"
reverting @attribute_to_column_name to avoid getting more confuse

This reverts commit 8af9ef373cac531442d580caedd49eec808d1990.
modify formatter for user such that it'll take care of invalid email address and create bogus ones as necessary
added similar email checks (as previous commit) for agent importer
- added ticket import ability
- added before_validation and validation for tickets
- added sample custom fields in database
- added support for proper formats for time and priority
- added business logic for reading ticket fields, etc
- added table for comments
- created object comment
- added comment associations for ticket and user (author)
user validation
fixing validation for users
- added validation for comment
- added import ability for comments (do not import comments where reference ticket can't be found)
uncomment out validations
- added agents group object
- added the group field to tickets (not applicable for medidata)
fixed up formatter to use 2-digit for year instead of 4
fixed up typo in class name
added support for exporting tickets