(Draft) Create a section to download list of additives risks

[teolemon]

(Draft) Create a section to download list of additives risks

This needs to :

• propose available additives risks lists
• the available lists should be refreshable from the Open Food Facts server
• let the user delete downloaded lists
• let the user enable or disable display of downloaded lists on the product page

[VaiTon]

@teolemon any news on this?

[teolemon]

I'm moving this to a design document, it's not mature yet: https://docs.google.com/document/d/12z2OepuJID1HhrcrwOw6_5UT9s9EsapH5cumpB9mcpg/edit