Topic: 0.4.1 released

- Fixed critical errors with threaded DB use

- Now distributed using installers
- Added a tutorial and a sample portfolio
- Fixed bug when deleting portfolios
- Fixed bug when creating combined or benchmark portfolios
- Added support for Penson Financial Services, E*Trade, USAA brokerages
- Added subtypes for dividend (capital gains, qualified, etc.)
- Made OFX parsing more robust
- Allowed user to choose charts for summary tool
- Removed tools menu (confusing)