[recipes] (15 commits) Created branch shopping-list

[Matthias Clasen <matthiasc src gnome org>]

The branch 'shopping-list' was created.

Summary of new commits:

  16a5cf2... Add a function to format time differences
  4515d75... Maintain a 'last changed' timestamp for favorites
  20523e6... Slight format change for favorites.db
  65c6965... Add a shopping list api
  dbfe9f1... Add a Shopping List button to the action bar
  cab7032... Add a temporary shopping cart icon
  2676e00... Support querying the shopping list
  7ad0066... window: Add api to show the shopping list
  cd4e0cf... Add a new shopping list tile to the recipes page
  e568346... Add a small tile variant for recipes
  71045fe... Be safe against crash in the details page
  d5a8aee... Update the empty list states
  40ad0d8... Remove an outdated comment
  3eed5de... Add api to get unformatted units for ingredients
  86aafec... Add minimal merging for ingredient lists