Description

User not notified about mode installation or deletion :
When user installs or removes a mode, the user is not notified when the installation is completed or not .

It would be good if the user is notified once the installation process is finished. We could have a dialog box popping up to inform the user about the status of installation.

Steps to Reproduce

1. Choose Add mode option
2. Install or remove any mode
3. Once the installation is complete or the deletion is complete the user is not notified

Your Environment

Processing version: 3.5.3
Operating System and OS version: Arch Linux