Fix segment content appearing off-center when dragging a segment wider than default width.
Fix segment content appearing off-center when dragging a segment wider than default width.

macGRID-SRN/streetmix,macGRID-SRN/streetmix,CodeForBrazil/streetmix,kodujdlapolski/streetmix,CodeForBrazil/streetmix,magul/streetmix,codeforamerica/streetmix,magul/streetmix,macGRID-SRN/streetmix,magul/streetmix,codeforamerica/streetmix,CodeForBrazil/streetmix,kodujdlapolski/streetmix,kodujdlapolski/streetmix,codeforamerica/streetmix