Mass rename property-value pairs

[CharlesNepote]

Problem

• some property-value pairs are errors
• now that we have gain experience, some property-value should be renamed to be more clear; eg. evolutions could be nb_of_evolutions; data_quality should be renamed data_quality:issue; producer_data_issue could be renamed data_quality:issue:from_producer
• some property-values pairs are very specific to given context, and should be renamed to be more clear
  • eg. in the context of food products, conservation:date_type has only two possible values: best-before and use-by
    • the property should be renamed food:conservation:date_type to avoid mismatch with other kind of products
• one-word properties can be very polysemic and should be renamed: variety, vintage, nova can mean very different things

Proposed solution

This should be an option in the property page, allowing people to review all the concerned products, helping them to find a good name; eg. https://world.openfoodfacts.org/property/variety

A second step can be to let the user select each product and rename the property of the selected product.

Additional context

This should be for moderators only.