states are explicit

config/config.go

@@ -121,11 +121,11 @@ func AllZips() []string {
 	zipm := map[string]struct{}{}
 	for _, v := range Clients(time.Now().Add(time.Hour * 24 * 365)) {
 		for _, state := range v.Zips {
-			statem[state] = struct{}{}
+			zipm[state] = struct{}{}
 		}
 	}
-	zips := make([]State, 0, len(statem)+1)
-	for k := range statem {
+	zips := make([]string, 0, len(zipm)+1)
+	for k := range zipm {
 		zips = append(zips, k)
 	}
 	return zips