Editing a Lexeme must only be possible by accounts with the "edit" right.

Acceptance criteria

• A user without the "edit" right can not edit any part of a Lexeme

Scenarios

Scenario: Not authorized

GIVEN I am on the Lexeme page
WHEN I do not have the "edit" right
THEN I see no edit buttons

Scenario: Authorization revoked after page load

GIVEN I am on the Lexeme page
AND I do not have the "edit" right
AND I see edit buttons
WHEN I edit something
AND I submit changes
THEN Show the error message from the API (the general error handling in Wikibase) at the save button

Links:

• Built in Mediawiki rights: https://www.mediawiki.org/wiki/Manual:User_rights#List_of_permissions
• Wikibase repo/includes/Store/EntityPermissionChecker.php