[Bug-gnubg] Advance to error buttons

[Ian Shaw]

The advance  to error buttons on the annotation window could function
better.

At present the jump take you to the cube decision display, before the dice
roll.

If it is a chequer play problem it would be better to display the position
with the dice rolled.

At the moment I find it takes a while to work out exactly what I am looking
at.

An extra nice feature would be a drop down selector to allow the user to
skip to doubtful/bad/very bad.

Since we've been talking about terminology, how about using "error" and
"blunder" instead of "bad", "very bad"? These terms seem to be in fairly
common use.

When the Good Moves feature is implemented, will we be able to include these
in the navigation?

---
Ian