Indicate which profile is beeing backed up in GUI and system tray

[deermo]

Is your feature request related to a problem? Please describe.
I have a few Vorta profiles. When a backup is running, I can not tell which profile is beeing backed up (neither in the sysem tray nor in the main window).

Describe the solution you'd like
Add an indicator which profile is being backed up.
For the main window, this could be implented using a box around the "Start backup" / progress bar area (BTW: Putting these elements in a box could be useful anyway as these elements are kind of "global" and don't change when changing the view of the settings area, maybe I add another suggestion for this too)

For the tray, I small icon next to the profile in the list could be used to indicate that this profile is running.

Describe alternatives you've considered