Use explicit version for react-tabs

package.json

@@ -52,7 +52,7 @@
     "react-modal": "1.7.2",
     "react-redux": "5.0.3",
     "react-style-proptype": "2.0.1",
-    "react-tabs": "^0.8.2",
+    "react-tabs": "0.8.2",
     "redux": "3.6.0",
     "redux-throttle": "0.1.1",
     "scratch-audio": "latest",