Jal

- updates for broker statements import
- UI updates

- added configuration of database location
- prices downloading was moved to independed thread to allow interruption of the process
- minor error fixes

- UI improvements
- Fixes and improvements of reports
- Improvements for asset quotations download
- Error handling improvements
- Corrections of database foreign keys

Improvements and corrections for Portuguese tax report.

- Handling of assets transfers and corporate actions was improved to keep FIFO order before the event.
- Interactive Brokers statement import corrections for vesting.
- Quotes downloaders were updated and corrected.
- Some internal code cleanup.
- Tax reports were updated to reflect changes in events handling.

- VTB statement import improvements
- Minor bug fixes