Steps to reproduce:

1. Right-click on an arbitrary contact
2. Click on "Assign selected contacts to group" (="Gewählte Kontakte einer Gruppe zuordnen")
3. Click on an arbitrary group

Actual results:
After selecting the group to which the contact should be added the feedback "Successfully added the contacts to this group" (="Kontakte wurden dieser Gruppe hinzugefügt") is displayed.

Expected results:
The feedback following an action by the user should match with the action conducted so that the user does not have to wonder if the software did what it should do.
Suggestion: The function should be renamed into "Add selected contacts to group" (="Gewählte Kontakte einer Gruppe hinzufügen") so that it matches with the action performed.