[GNC] Trivial feature - View zero accounts

[Keith Bellairs]

I close accounts at year end. So if "view zero accounts" is not set, all my
income and expense accounts disappear. To find them I have to go to
"View->File By->Other" just to see them. Then when I want to turn them off
again to get rid of historical clutter I have to go the same way.

It would be cool to have an icon on the main window to toggle the Show Zero
feature.

But it is a feature request and the developers do important work, so I am
sure it is also low priority.

Thanks for the great accounting system.

Keith