switched to _.isEmpty check

controller/predicates/is_coarse_reverse.js

@@ -5,5 +5,5 @@ const non_coarse_layers = ['address', 'street', 'venue'];
 module.exports = (req, res) => {
   // returns true if layers is undefined, empty, or contains 'address', 'street', or 'venue'
   return !_.isEmpty(req.clean.layers) &&
-          _.intersection(req.clean.layers, non_coarse_layers).length === 0;
+          _.isEmpty(_.intersection(req.clean.layers, non_coarse_layers));
 };