Marks and unmarks the selected contributor in the list. Also changes the current user to just show as bolder font than the rest (because the selected user now has the light background). Cursor is now also adjusted to be a pointer, so it's visible that one can click the list entries.
Marks and unmarks the selected contributor in the list. Also changes the current user to just show as bolder font than the rest (because the selected user now has the light background). Cursor is now also adjusted to be a pointer, so it's visible that one can click the list entries.