Update jest version (facebook#4846)

* Update jest version

* Update babel-jest version

* Use testURL: http://localhost in jest configs.

* Update to jest version 23.5

This version of jest includes a fix for jsdom/jsdom#2304

* "testURL": "http://localhost" is default with jest v23.5

package.json

@@ -26,7 +26,7 @@
     "autoprefixer": "8.5.0",
     "babel-core": "7.0.0-bridge.0",
     "babel-eslint": "8.2.3",
-    "babel-jest": "22.4.3",
+    "babel-jest": "23.4.2",
     "babel-loader": "8.0.0-beta.4",
     "babel-plugin-named-asset-import": "^0.1.0",
     "babel-preset-react-app": "^3.1.1",
@@ -50,7 +50,7 @@
     "html-webpack-plugin": "3.2.0",
     "identity-obj-proxy": "3.0.0",
     "loader-utils": "^1.1.0",
-    "jest": "22.4.3",
+    "jest": "23.5.0",
     "mini-css-extract-plugin": "^0.4.0",
     "object-assign": "4.1.1",
     "postcss-flexbugs-fixes": "3.3.1",