Update, simplify the update procedure and present changes before starting the udpate

In the current update procedure:

• there is no presentation of the changes
• the interface is developer oriented and not user firendly

The procedure should be:
1- check for updates
2a- No update ->“No update available” is shown END
2b- Updates ->Open the update content description window
3a- the user clicks on the “Install update” button ->the updates are installed and TXM restarts
3b- the user clicks on the “Cancel” button ->the update description windows is closed.

(from redmine: issue id 3454, created on 2023/10/13 by Matthieu Decorde)