Implement Sign Out.
Implement Sign Out.

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