Upgrade react-scripts and storybook

Upgrade to babel v7.x
Upgrade to eslint v5.x
Pin exact electron/grpc/svgs versions

Author: tanx

package.json

@@ -29,11 +29,11 @@
     "protobuf": "pbjs assets/rpc.proto -t static-module -w es6 -o assets/rpc.js"
   },
   "dependencies": {
-    "@grpc/proto-loader": "^0.3.0",
-    "electron-is-dev": "^0.3.0",
-    "electron-log": "^2.2.14",
-    "electron-updater": "^3.2.3",
-    "grpc": "^1.15.1",
+    "@grpc/proto-loader": "0.3.0",
+    "electron-is-dev": "0.3.0",
+    "electron-log": "2.2.14",
+    "electron-updater": "3.2.3",
+    "grpc": "1.15.1",
     "locale-currency": "0.0.2",
     "mobx": "^4.9.4",
     "mobx-react": "^5.4.3",
@@ -42,41 +42,41 @@
     "react-art": "^16.8.6",
     "react-dom": "^16.8.6",
     "react-native-web": "^0.11.2",
-    "svgs": "^4.0.0"
+    "svgs": "4.0.0"
   },
   "devDependencies": {
-    "@storybook/addon-actions": "^3.3.15",
-    "@storybook/addon-links": "^3.3.15",
-    "@storybook/addons": "^3.3.15",
-    "@storybook/react": "^3.3.15",
-    "@svgr/cli": "^3.1.0",
+    "@babel/cli": "^7.2.3",
+    "@babel/core": "^7.4.0",
+    "@babel/plugin-proposal-object-rest-spread": "^7.4.0",
+    "@babel/plugin-transform-modules-commonjs": "^7.4.0",
+    "@storybook/addon-actions": "^5.0.6",
+    "@storybook/addon-links": "^5.0.6",
+    "@storybook/addons": "^5.0.6",
+    "@storybook/react": "^5.0.6",
+    "@svgr/cli": "3.1.0",
     "ajv": "^6.5.0",
-    "babel-cli": "^6.26.0",
-    "babel-core": "^6.26.0",
     "babel-plugin-react-native-web": "^0.11.2",
-    "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
-    "babel-plugin-transform-object-rest-spread": "^6.26.0",
-    "babel-preset-react-native": "^4.0.0",
     "concurrently": "^3.5.1",
-    "electron": "^3.0.9",
-    "electron-builder": "^20.8.1",
-    "eslint": "^4.19.0",
-    "eslint-config-google": "^0.9.1",
-    "eslint-config-prettier": "^2.9.0",
-    "eslint-plugin-html": "^4.0.2",
-    "eslint-plugin-prettier": "^2.6.0",
-    "eslint-plugin-react": "^7.7.0",
+    "electron": "3.0.9",
+    "electron-builder": "20.8.1",
+    "eslint-config-google": "^0.12.0",
+    "eslint-config-prettier": "^4.1.0",
+    "eslint-plugin-html": "^5.0.3",
+    "eslint-plugin-prettier": "^3.0.1",
+    "eslint-plugin-react": "^7.12.4",
     "isomorphic-fetch": "^2.2.1",
+    "metro-react-native-babel-preset": "^0.53.1",
     "mocha": "^5.0.0",
     "nock": "^9.1.6",
     "prettier": "^1.11.1",
     "prop-types": "^15.6.2",
     "protobufjs": "^6.8.8",
-    "react-scripts": "^1.1.5",
+    "react-scripts": "2.1.8",
     "sinon": "^6.0.0",
     "unexpected": "^10.37.2",
     "unexpected-sinon": "^10.10.1",
-    "wait-on": "^2.1.0"
+    "wait-on": "^2.1.0",
+    "webpack": "4.28.3"
   },
   "build": {
     "appId": "engineering.lightning.lightning-app",