Option to choose whether to include new boards in dashboard's widgets or not

Feature requests
1

I’d love to have a possibility to choose how the boards are added to the dashboard:

  1. Include the new board to all dashboard’s widgets (this is the only functionality at the moment)
  2. Don’t include the new board to dashboard’s widgets

When adding a board through option 2, I could afterward add the board to only specific widgets. And I wouldn’t have the pain of unchecking the board from many widgets one at a time.

At the moment, when I add a new board to a dashboard, the new board is automatically added to all the dashboard’s existing widgets. This does not suite me very well, since I have different kinds of boards with different information included in the same dashboard.