Add more help to the drive folder picker page
<ul class="browser-default">
<li>If not, your popup blocker probably hates this page. Click the button below to open the dialog.</li>
<li>After you select a folder you'll be redirected back to the addon.</li>
+ <li>If the folder you want to use doesn't exist yet, navigate to <a href="https://drive.google.com" target="_blank">Google Drive</a> and create it there first. The folder picker doesn't let you create folders.</li>
<li>The folder you select is where the addon will store snapshots from now on. This should be what you want.</li>
<li>If you'd like to know why this page has to be hosted on an external domain, <a target="_blank" href="https://github.com/sabeechen/hassio-google-drive-backup/blob/master/hassio-google-drive-backup/AUTHENTICATION.md">click here</a>.</li>
</ul>
