Web UI frontend automated browser tests (#2223)

* First pass at basic browser tests for #1926

* Run tests against dev web server not go server

* Bundle the web code into the server before running tests

* Move cypress UI tests into its own npm project + add tests

* Add additional tests + wire up with cypress dashboard

* Limit concurrency of workflow jobs

* Temporarily comment out some tests that do not pass in mobile. Will fix later.

web/components/common/UserDropdown/UserDropdown.tsx

@@ -81,7 +81,7 @@ export const UserDropdown: FC<UserDropdownProps> = ({ username: defaultUsername
   );
 
   return (
-    <div className={`${styles.root}`}>
+    <div id="user-menu" className={`${styles.root}`}>
       <Dropdown overlay={menu} trigger={['click']}>
         <Button type="primary" icon={<UserOutlined style={{ marginRight: '.5rem' }} />}>
           <Space>