New features
- Added new mineral - Chromium
- Added FoodData Central (USDA) support. You can now download product data from new remote database.
- Added Swiss Food Composition Database support
- Added external databases settings screen to manage remote databases

Bug fixes
- Stop overriding calories value when updating product or downloading product data from remote databases

Notes
Even the best food tracking app is useless without a good database of food products. This update adds support for two new databases: FoodData Central (USDA) and the Swiss Food Composition Database.