Move action-related services into separate file.
Add recipe database file.
Add recipe library service.
Add recipeForClassByName function to RecipeLibrary service.
Add recipe import UI.
Merge branch 'recipedb', closes #23.

* recipedb:
  Add recipe import UI.
  Add recipeForClassByName function to RecipeLibrary service.
  Add recipe library service.
  Add recipe database file.