Capstone: a secured app

Put three of the ideas from this track into one project. Every item must happen after you enrolled in the track; the check measures from your enrollment date, so work done earlier, or inherited from a template, does not count.

1. Social login: configure one OAuth provider under Users, OAuth, with its client id and secret.
2. Data: apply a schema change through the Database page (a new table or column), or through the API on a Backend Project.
3. A private file: upload a file to your project's storage. Use the private bucket if you can, and notice that its link expires.

An Insight Project or a Backend Project both work; pick the one you have been using.