Make it more clear what happens when a file is downloaded

[Jacalz]

Is your feature request related to a problem? Please describe:

I got some feedback from a user that it is not clear what has happened when the transfer reaches 100%. The result should be more clear to the user to avoid confusion.

Describe the solution you'd like to see:

Some ideas of how this can be improved:

• Include where the file was saved in the notification for receiving a file.
• Add an option to ask the user where to save the file.

[Jacalz]

We should probably update the notifications to say the file name as well. Makes it a bit clearer.