disabled confusing extra label on IncrementingPlugValueWidget
Merge branch 'master' of https://github.com/ImageEngine/gaffer
Merge branch 'master' of https://github.com/ImageEngine/gaffer
Fixed CompoundDataPlugValueWidget non-overridden labels.

The code for setting the width of the label was assuming the label would be a LabelPlugValueWidget, but for non-labelled plugs it was in fact a StringPlugValueWidget, which requires a different method of setting the width.