Add clarification to the width pull-down.
Add clarification to the width pull-down.

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