ask for confirmation before moving an entity to Wikidata

[maxlath]

from a feedback:

On the last book I wanted to add: https://inventaire.io/entity/isbn:9782205076394 There was 2 works: https://inventaire.io/entity/wd:Q47508762 and https://inventaire.io/entity/wd:Q105045498 The work https://inventaire.io/entity/wd:Q105045498 had the edition, but the work wasn't as complete as the other and not linked to wikidata. What I did is click the move to wikidata in the hope that the system will either automatically find that the book was already existing there or ask me if I want to link to an existing wikidata page. But no luck, it has just create a new item in wikidata. [...] I'm wondering if [this improvement] could be implemented :

• when clicking on move to wikidata, search if the item is not already existing, and display a confirmation window to the user with the link to what the system think is the existing page.

A confirmation menu would let the opportunity to make explicit what is about to happen. As for searching if the item doesn't already exist, if it does, the right following action would be to merge the Inventaire entity in it, which would, as of now, require dataadmin rights (see https://github.com/inventaire/inventaire/issues/491).