Updating css webpack integration

package.json

@@ -153,6 +153,7 @@
     "sass-loader": "^7.0.3",
     "sass-resources-loader": "^2.0.1",
     "stringz": "^1.0.0",
+    "style-loader": "^1.1.3",
     "substring-trie": "^1.0.2",
     "throng": "^4.0.0",
     "tiny-queue": "^0.2.1",
@@ -176,6 +177,7 @@
     "eslint-plugin-promise": "~4.1.1",
     "eslint-plugin-react": "~7.12.1",
     "jest": "^24.8.0",
+    "node-sass": "^4.13.1",
     "raf": "^3.4.1",
     "react-intl-translations-manager": "^5.0.3",
     "react-test-renderer": "^16.7.0",