ModerationController: Update count from master, not slave
ModerationController: Update count from master, not slave

At the time that resetNotificationCount() is called, we've only
just moderated something, so the slave won't have those changes yet,
and the computed notification count will be wrong.

Change-Id: Ia83f2b9cf7f4bbaee25e03f7bc8f73bcd4d345f9

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