WIP: Create ingredient from USDA food
Extract IngredientAttributeBuilder and AttributeValueProducer
Convert units
Don't copy attribute if value is 0
Styling
Fix copying ingredient to include calories
Schema fixes

* Add Vitamin D to nutrients
* Fix ingredient cost field so it isn't essentially an integer
Add importing ingredients from a DIY Soylent recipe
Order ingredients by name
Fix a few things with the importer

* Assign serving size
* Exclude more unnecessary attributes
* Set serving size to 100g
Order ingredients by name case insensitively
Fix flash messages to read the right thing
Fix creating ingredients and nutrient profiles to include vitamin D