As an API user I want to be able to edit statements on Forms through wbeditentity in order to quickly add/modify/remove data.
Currently editing of statements on Forms is not supported via wbeditentity.
GIVEN I make a `wbeditentity` API request with the `"claims"` key set within a form's JSON WHEN I submit the request THEN the form's statements are modified accordingly
- statements are saved persistently
- edit summary shows up in recent changes/Lexeme history/watchlist
* What parts of it are already working? wbsetclaim works, wbeditentity doesn't work at all.
In theory, once T201389 is solved, the only thing left to make wbeditentity work, is to add the existing ChangeOpDeserializer for Forms.
- Sense equivalent T199896