Ensure display on Open Products Facts

[teolemon]

Ensure display on Open Products Facts.

• The /keys page is working properly.
• The /product/* page is not working (first hypothesis was lack of nutrition section, but the issue is the same on Open Pet Food Facts)

[CharlesNepote]

A simple way to do it, without modifying perl front-end, is to move the "User properties" block (= the one dedicated to Folksonomy Engine) just before "Changes history" block -- but you would have to be connected to see it.

Another way is to display it after the following block: <div itemscope="" itemtype="https://schema.org/Product"> (test to be done).