[lmi] Census editor: column width

[Greg Chicares]

Resized columns aren't always wide enough to display all their contents.
To reproduce:

  File | New | Census
  Census | Add cell
  Census | Edit cell
  change "Definition of life insurance" to "GPT"
  OK
  Census | Varying column width

In the third column of the first row, I expect:
  Earlier of increase or unnecessary premium
but instead I see:
  Earlier of incr...essary premium

BTW, if I double-click the corresponding draggable sizer in the header,
one more character is displayed:
  Earlier of incr...cessary premium
The double-click and "Varying column width" autosizing methods use
slightly different widths; that behavior is consistent when I toggle
back and forth between them. Shouldn't they do exactly the same thing?