Add active storage for images via dropbox

[lortza]

I started setting up active storage via dropbox to handle recipe pictures. As it turns out, dropbox has changed their API and the gems I am using to support this integration are not handling everything anymore.

The error i am getting is:

HTTP 401: {"error_summary": "missing_scope/...", "error": {".tag": "missing_scope", "required_scope": "files.content.write"}}

Helpful documentation:

• http://lortza.github.io/2020/05/31/activestorage-dropbox.html
• https://www.dropbox.com/developers/apps?_tk=pilot_lp&_ad=topbar4&_camp=myapps
• https://www.dropbox.com/developers/reference/migration-guide