Add a sidebar with cross-wiki sources and pages of unread notifications.
The filter allows the user to fetch notifications from a foreign source
and specific pages if those exist.
Bug: T129366
Change-Id: I57d827a47f80274d75364c2099a9624049a26834
The zero results can either be because there are no notifications
at all for this user in the local wiki, or because there are no
results for the specific filter. Both messages are used for either
case.
Also, clean up the display of push/pop pending for the inbox widget
and hide the label in case the message count is 0 or 1 notifications
as it is unhelpful and irrelevant in these cases.
Bug: T136586
Bug: T136574
Bug: T129363
Change-Id: I1465f772bb9f5247df645d6612f951e5fd7d38cf
Add a pagination widget with events and separate the logic for
organization. Let the widget listen to events from the pagination
model so it always keeps itself updated.
Change-Id: Id1df112cbb0d90195217e88fbee97a59170b99c5
