#2 HGradeScale labels are kludgy.

[Jonathan Merritt]

The labels on the HGradeScale widget sometimes don't
work very well, and they aren't spaced properly. They
also use unsightly numbers of zeroes after the decimal
point sometimes. Eg:

0.1 0.15 0.2 0.25

Should be:

0.10 0.15 0.20 0.25

for consistency.

This is really a "lack of feature" problem rather than
a bug.