Focus bar too long when >100%

[Daniel Besse]

Bar for a zone when expanding details of focus can extend on 2 lines if >100%. We should cap the width to 100% (or leave some margin like width=min(100,percents*0.9) if we want bars above 100% still longer than bars at 100%).

[Daniel Besse]

capping focus bar width (resolve #154)

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