See Iae0e2ce3. Since Echo master requires core master, this just depends
on the master patch instead of trying to maintain BC.
Depends-On: Iae0e2ce3bd42dd4776a9779664086119ac188412
Change-Id: Icc088b31bc99e03ac88dfb44329df55318bf99b5
Previously, getNotificationCount() only looked at local notifications,
and foreign notifications were added in separately by getMessageCount()
and getAlertCount(). This didn't make any sense and resulted in
counter-intuitive things like I4d49b543.
Instead, add a $global flag to getNotificationCount(). If $global=false,
the local count is returned as before, but if $global=true, the
global count (=local+foreign) is returned. If $global is omitted,
the user's cross-wiki notification preference determines which is returned.
Update getLastUnreadNotificationCount() in the same way, since it had
the same issues.
Also add caching for global counts and timestamps, using a global
memc key.
Bug: T133623
Change-Id: If78bfc710acd91a075771b565cc99f4c302a104d
Add a 'mark as unread' to all unread notifications and allow them
to be marked unread. These notifications will no longer be automatically
marked as read when the pages they refer to are visited.
Bug: T73564
Change-Id: I677d3c0399e46fd7c35531df1cc0e61db2d4eb1b
