We need to make it possible to search for a federated property in the property input field when adding new statements.
Scenario: Federated properties are enabled and I am manually adding a statement to a local item
Given I have selected +add statement on the item page
When I enter the federated property label or Pxx in property input field
Then federated properties appear in the results list for me to select from
The url field in the wbsearchentities response will for now contain the url of the property on the source wiki, but we make this configurable in case we want to change it to the url of the local representation of the federated property (= "shadow page") in the future.