Add a deep link to the Taxonomy Editor in the Ingredient analysis knowledge panel

[teolemon]

Problem

• No easy road to fix a taxonomy beyond GitHub

Proposed solution

• Taxonomy editor is becoming a viable option for casual users (who are not in a hurry)
• We're probably going to add deeplinks to the Taxonomy Editor : Add a deep link that allows to create a new project with a given taxonomy, and directly jumps to a node taxonomy-editor#448
• Add a deep link to the Taxonomy Editor in the Ingredient analysis knowledge panel

Code pointers

Mockups

Part of

• Improve write API's authentication failure response #525

[teolemon]

@alexgarel @stephanegigandet a way to drive traffic to the Taxonomy Editor