dev/core#2141 - Multiple revisions to new screen for inspecting OAuth tokens

dev/core#2141 - Multiple revisions to new screen for inspecting OAuth tokens

Overview
--------

5.32 adds `oauth-client`, which includes a screen for inspecting OAuth
tokens.  This is intended to facilitate debugging.

Before
------

* The screen works for inspecting one token. It offers a button to inspect other tokens, but it doesn't work.
* The screen only shows the `access_token` (and its JWT variant)

After
-----

* The malfunctioning button isn't needed. Remove it.
* The screen shows a full record of the token details. This should make it even more useful for debuggin.