QA fixes

src/layer/tile/GeoJSONTileLayer.js

@@ -106,7 +106,10 @@ class GeoJSONTileLayer extends TileLayer {
   }
 
   _createTile(quadcode, layer) {
-    return new GeoJSONTile(quadcode, this._path, layer, this._options);
+    var newOptions = extend({}, defaults, this._options);
+    delete newOptions.attribution;
+
+    return new GeoJSONTile(quadcode, this._path, layer, newOptions);
   }
 
   // Destroys the layer and removes it from the scene and memory

src/vizicities.css

@@ -30,7 +30,7 @@ text-decoration: underline;
   width: 250px;
   padding: 4px 7px;
   padding-right: 120px;
-  background: rgba(255, 255, 255, 0.9);
+  background: #ffffff;
   border-radius: 3px 0 0;
   opacity: 0;
   transition: opacity 100ms linear;