Fix thumbnail building position.
Fix thumbnail building position.

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