Notification Consistency

Make sure that the new rules for counting notifications for muted, mention and low priority rooms is applied consistently to the room list, space drawer and the task manager notification badge

implements #644

src/controller.h

@@ -117,6 +117,7 @@ private:
 private Q_SLOTS:
     void invokeLogin();
     void setQuitOnLastWindowClosed();
+    void updateBadgeNotificationCount(NeoChatConnection *connection, int count);
 
 Q_SIGNALS:
     void errorOccured(const QString &error, const QString &detail);