[recipes] (10 commits) Created branch shopping-list

[Matthias Clasen <matthiasc src gnome org>]

The branch 'shopping-list' was created.

Summary of new commits:

  c8c3856... Add a function to format time differences
  50ef0f5... Maintain a 'last changed' timestamp for favorites
  9141e8c... Slight format change for favorites.db
  95c3616... Add a shopping list api
  80848dc... Add a Shopping List button to the action bar
  e89c294... Add a temporary shopping cart icon
  8be7a87... Support querying the shopping list
  5e2722c... list page: Support showing the shopping list
  b63006d... window: Add api to show the shopping list
  8706425... Add a new shopping list tile to the recipes page