As a user, I want to mark 50 "Gilles added a project" notifications at https://phabricator.wikimedia.org/notification/ read without opening 50 URLs.
Ideas:
- one checkbox per row, that I can then select either one by one, or with shift selection, or with extensions such as checkfox;
- one "mark as read" button for each row.
(Of course I prefer the first because I like shift selection and I use checkfox.)