Data panel usability: Allow selecting unique catalogues and/or Imaging observation more easily

In the data panel when you are interested in only one source or image catalog you need to one by one deselect the others. I think it should be the other way around or having a button to deselect all of them, so you can select only one more easily. Other option would be to double-clicking to select only one...

I think this is cheap to implement and would greatly improve the usability of the data panel.