Update frontend dependencies (#498)

* update npm packages

* update tsconfig

* remove babelrc, babel presets as well as stable package

* fix svg namespace tag syntax errors

* fix reference error due to namespace and class component having same name

* replace tslint with eslint

* make eslint happier

* update .nvmrc to 14

* update node version to 14 in gh workflow

* fix eslint warnings due to warnings treated as errors on CI (process.env.CI = true)

* pretty fix

* bump node version in Dockerfile

* use createRoot instead of react-dom render

* update browsers list in package.json

frontend/src/index.tsx

@@ -15,11 +15,13 @@
 // along with this program. If not, see <https://www.gnu.org/licenses/>.
 
 import * as React from 'react';
-import * as ReactDOM from 'react-dom';
+import { createRoot } from 'react-dom/client';
 import App from './App';
 import './index.css';
 import { unregister } from './registerServiceWorker';
 
-ReactDOM.render(<App />, document.getElementById('root') as HTMLElement);
+const container = document.getElementById('root') as HTMLElement;
+const root = createRoot(container);
+root.render(<App />);
 
 unregister();