Allow marking all as read from popout window
Allow marking all as read from popout window

Clicking 'mark all as read' would only mark the notifications you are viewing as read
instead of all of them - now it will mark all of them as read.

Bug: T156425
Change-Id: If46a85f91dfddd4ac158e5c3a4f942c9c3d9aac1

wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo,wikimedia/mediawiki-extensions-Echo