The Symbols window showed Type-Name-Value, which feels like the
natural order. However, the Value field has a narrow max width,
while the Name field can get pretty long. It makes more sense to
let Name fill out to the right edge, allowing the user to scroll
horizontally to view longer-than-usual names.
Also, noticed that the column sort preference wasn't being
restored. Fixed that.
(Issue #12)
37bbc3bd41