Barplot for % of waterfootprint

[ccamara]

Create a horizontal barplot displaying the ingredients' percentage of total waterfootrpint. Ideally per number of uses or kg

User story:

• As a parent I want my children to eat food that is good for the environment #3

[ccamara]

Consider comparting two barplots: one that does not take into account how much is used every ingredient, and another one taking into account that. That would give information about their choices:

Are we using an ingredient with a big water footprint too much? Could we substitute it for another one?

If we had the kcal per ingredient, we might compare that, too.