Only use lodash for tests.

Author: davidkpiano

package.json

@@ -70,6 +70,7 @@
     "express-urlrewrite": "^1.2.0",
     "immutable": "^3.7.6",
     "jsdom": "^9.2.1",
+    "lodash": "~4.17.2",
     "mocha": "^2.5.1",
     "react": "~15.4.1",
     "react-addons-test-utils": "~15.4.1",