Added a "Ingredient In" view for the items

This shows what recipes contain an item as an ingredient:
![ingredientin](https://f.cloud.github.com/assets/1114120/137841/00907e36-717e-11e2-93af-f91eeb9109ab.png)

The Show All button is shown whenever there are more than 4 recipes to display (otherwise the chart would be pushed down to the bottom of the page).

It integrates nicely with the existing "Recipe" view:
![integration](https://f.cloud.github.com/assets/1114120/137849/45ff9ccc-717e-11e2-9d8c-024afab63f3f.png)