rackerlabs/stacktach — pull request #132 by anujm (2013-06-24 14:56:38+00:00)
Title: Incorporated Review comments/misc other changes

- Converted migration to South data migration
- Changed the way exists were being updated
- Removed ComputeUpdateInstanceNotification
- Removed the redundant import
- Ensured that exists events are considered when populating rawdata but not while populating instanceusages
- Renamed south migrations