Updating ESLint (#4085)

webapp/package.json

@@ -47,8 +47,8 @@
     "babel-preset-stage-0": "6.5.0",
     "copy-webpack-plugin": "3.0.1",
     "css-loader": "0.25.0",
-    "eslint": "3.0.1",
-    "eslint-plugin-react": "5.2.2",
+    "eslint": "3.5.0",
+    "eslint-plugin-react": "6.3.0",
     "exports-loader": "0.6.3",
     "extract-text-webpack-plugin": "1.0.1",
     "file-loader": "0.9.0",