cubicweb-file #2775845 Fix broken attachment selection in "view all attachments" view [validation pending]

In the forge, when a ticket has 2+ attachments, the attachment relation side box has a link that points to a view where one can see all the attached files.

This view is currently broken and it's impossible to select/download anything other than the currently-selected attachment.

done in1.14.0
load left0.000
closed by#e9d7e664a9bd [views] Fix server-side AJAX handler name (closes #2775845)
patch[views] Fix server-side AJAX handler name (closes #2775845) [applied]