should allow dividers to be rubberband or shift- selectable (and obvious when they are selected manually)
I cannot seem to move a chunk of cards around and pick up their surrounding dividers too.
This means I can't 'pick everything up and move it down' - I can just select dividers but don't seem to be able to add them to a selection with shift-click.
This means to move everything, say, down the screen, to make more room in a slice or insert a slice, I have to:
* select all the tickets.
* (shift-select more if I missed any)
* (I cannot shift-select dividers and add them to this selection)
* move them down
* select dividers and move them.
* fix any cards which have been bumped between cells due to the dividers initially being in the wrong places.