Move the Usage tile to the bottom of the Settings screen

[marksftw]

To clean up the main sidebar, we should move the Usage meter component to the Settings screen.

1. The usage meter doesn't update until a UI refresh, so it currently is stale
2. This is consistent with how other agents behave.
3. That area on the main screen can be used to display more chat history and for other things in the future
4. Place the usage meter at the bottom of the Settings screen, pushing the "Log Out" button and email/plan component up, which improves a UX flaw at the moment: users clicking on the Settings icon too aggressively can accidentally log themselves out.
5. This protects users who want to share screenshots of the app online but don't want that kind of detail included

[AnthonyRonning]

I think it’ll make the problem worse if it’s hidden completely. We can just fix the staleness problem if that’s the issue.

I also don’t know the intention behind the issue. What is it trying to solve? Staleness?

[marksftw]

It's trying to solve multiple small issues at once, enumerated in the description. Even if it wasn't stale, I think it's an eye sore on the main screen that would be better behind settings.

If it's a problem with touching billing code, okay. Maybe we keep it on the screen, but collapse the component down to just a Plan Name Badge and when the user clicks, it shows a popup of their usage remaining.