[#139045091] Undo of move component causes the component to shrink to nothing. We call updateModelLayout when the mouse goes down in a DragBorderView so that we're sure the model has the correct layout.
[#139045091] Undo of move component causes the component to shrink to nothing.
We call updateModelLayout when the mouse goes down in a DragBorderView so that we're sure the model has the correct layout.

concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap,concord-consortium/codap