- Is there a place for the user to have an overview of all apps he / she has authorised?
- Can the user de-authorise an application? And so how?
If a user has any authorized applications, the
apps tab appears on their profile pages.
From the page linked a user can see their authorized applications, and de-authorize any of them.
That link probably won't be conditionally displayed forever, but we haven't got anything to show in the "emtpy" case just yet.