An importer for ica.se (Swedish storechain)

[MrShark]

A simple importer for web pages.

The recepies are marked up using a microformat from http://schema.org/Recipe so the parser should be extendible to parse more sites. I will try to do this later, but for now I haven't had the time to find more sites and try them.

There is a hack to set the image for the recipe based on parsing that should be removed later, but that needs an interface in WebParser to set the image.

[ockham]

Looks good and seems to work fine, merging. Thank you for your contribution! A couple of notes:

• That ica.se website seems to support a couple more recipe schema tags, such as rating and description, which we might want to use, too (description could go into our modifications field).
• Recipe importers make a good case for our need for automatic (unit) tests: we should supply an example URL for processing (or better yet, provide an example HTML file and image) and test if the import works correctly.

Tell me if you feel like tackling any of these!