alter3go/SmartFridge — pull request #2 by alter3go (2014-04-07 21:56:31+00:00)
Title: 595-73 improve navigation/data passing

Improve navigation/data passing within `AddNewItem` page.
- Use `Binding` to sync view and `FoodInfo` model
- Use `Navigation.GoBack()` when appropriate
- Use `PhoneApplication.Current.State` dictionary to pass data to child views
- Use a Converter to ensure only valid positive integers are saved for quantity

Also, a couple of minor fixes:
- Fix accept/cancel icons on Datepicker
- Item look-up now happens when a UPC is typed in (not only when scanned)