This extension will keep your notifications "active" - it will pull special controller every configurable amount of seconds and will recieve JSON of the notifications for the user. Then it will update the notifications container adding new ones at the top.
- git clone https://github.com/satanasov/activenotifications.git $phpbb_root_path/ext/anavaro/activenotifications
- Go to ACP->Customize-> Extensions
- Enable phpBB 3.1 Active notifications
ACP -> Board features -> Active Notifications
#WARNING!!! This extension is tested only with prosilver. If your style is not supported by default - contact me and I will see what can be done!