Fix npm test and tidy up dependencies (#279)

* Add babel-preset-react-app as a dependency and move enzyme into devDeps

* Remove unused @babel/polyfill and bump versions of ag-grid

* Move eslint-plugin-react into main dependencies

testplan/web_ui/testing/package.json

@@ -3,17 +3,15 @@
   "version": "0.2.0",
   "private": true,
   "dependencies": {
-    "@babel/polyfill": "7.0.0",
     "@fortawesome/fontawesome-svg-core": "1.2.2",
     "@fortawesome/free-solid-svg-icons": "5.2.0",
     "@fortawesome/react-fontawesome": "0.1.3",
-    "ag-grid-community": "19.0.0",
-    "ag-grid-react": "19.0.0",
+    "ag-grid-community": "^21.2.1",
+    "ag-grid-react": "^21.2.1",
     "aphrodite": "2.2.3",
     "axios": "0.19.0",
     "bootstrap": "4.3.1",
-    "enzyme": "3.7.0",
-    "enzyme-adapter-react-16": "1.6.0",
+    "eslint-plugin-react": "^7.14.3",
     "react": "16.6.0",
     "react-copy-html-to-clipboard": "6.0.4",
     "react-custom-scrollbars": "4.2.1",
@@ -27,8 +25,10 @@
     "reactstrap": "6.3.0"
   },
   "devDependencies": {
+    "babel-preset-react-app": "^7.0.0",
+    "enzyme": "3.7.0",
+    "enzyme-adapter-react-16": "1.6.0",
     "enzyme-to-json": "^3.3.5",
-    "eslint-plugin-react": "^7.14.3",
     "moxios": "0.4.0"
   },
   "scripts": {