Plugin update notification duplicates
If there is a plugin update available and gajim is kept running long enough, gajim seems to check for updates again and will add a second notification when there already is one for the same update. This also results in the notification counter increasing.
Steps to reproduce problem
- gajim shows a notification of available plugin update
- do not install update, do not dismiss the notification
- let gajim keep running for about 24 hours