Upgrade webpack deps and use strictExportPresence (facebook#2028)

Author: Timer

config/webpack.config.dev.js

@@ -107,6 +107,7 @@ module.exports = {
   },
   // @remove-on-eject-end
   module: {
+    strictExportPresence: true,
     rules: [
       // Disable require.ensure as it's not a standard language feature.
       { parser: { requireEnsure: false } },

config/webpack.config.prod.js

@@ -106,6 +106,7 @@ module.exports = {
   },
   // @remove-on-eject-end
   module: {
+    strictExportPresence: true,
     rules: [
       // Disable require.ensure as it's not a standard language feature.
       { parser: { requireEnsure: false } },

package.json

@@ -25,25 +25,25 @@
     "babel-core": "6.23.1",
     "babel-eslint": "7.1.1",
     "babel-jest": "18.0.0",
-    "babel-loader": "7.0.0-alpha.3",
+    "babel-loader": "7.0.0",
     "babel-preset-react-app": "^2.1.1",
     "babel-runtime": "^6.20.0",
     "case-sensitive-paths-webpack-plugin": "1.1.4",
     "chalk": "1.1.3",
     "connect-history-api-fallback": "1.3.0",
     "cross-spawn": "4.0.2",
-    "css-loader": "0.27.3",
+    "css-loader": "0.28.0",
     "detect-port": "1.1.1",
     "dotenv": "2.0.0",
     "eslint": "3.16.1",
     "eslint-config-react-app": "^0.6.1",
-    "eslint-loader": "1.7.0",
+    "eslint-loader": "1.7.1",
     "eslint-plugin-flowtype": "2.21.0",
     "eslint-plugin-import": "2.0.1",
     "eslint-plugin-jsx-a11y": "4.0.0",
     "eslint-plugin-react": "6.4.1",
     "extract-text-webpack-plugin": "2.1.0",
-    "file-loader": "0.10.1",
+    "file-loader": "0.11.1",
     "fs-extra": "0.30.0",
     "html-webpack-plugin": "2.28.0",
     "http-proxy-middleware": "0.17.3",
@@ -52,10 +52,10 @@
     "postcss-loader": "1.3.3",
     "promise": "7.1.1",
     "react-dev-utils": "^0.5.2",
-    "style-loader": "0.16.0",
+    "style-loader": "0.16.1",
     "url-loader": "0.5.8",
-    "webpack": "2.3.2",
-    "webpack-dev-server": "2.4.2",
+    "webpack": "2.4.1",
+    "webpack-dev-server": "2.4.4",
     "webpack-manifest-plugin": "1.1.0",
     "whatwg-fetch": "2.0.3"
   },