This update for tryton, trytond, trytond_account, trytond_company, trytond_stock fixes the following issues:

Changes in tryton:
- Version 6.0.48 - Bugfix Release

Changes in trytond:
- Version 6.0.57 - Bugfix Release

Changes in trytond_account:
- Version 6.0.28 - Bugfix Release

Changes in trytond_company:
- Version 6.0.8 - Bugfix Release

Changes in trytond_stock:
- Version 6.0.31 - Bugfix Release