Persist visibility of table inspector sections

[seancolsen]

Fixes #2379

This PR makes it so that the toggled visibility of the table inspector and most sections inside it are persisted in localStorage. If you hide the table inspector, it will remain hidden until you open it again — even after you close your browser tab. The same is true for all the sections in the "Table" and "Column" tab. Since there's only one section in the "Record" tab, I didn't bother persisting that, but we could add that later by following the same patterns here.

I opened this PR now because I was doing a lot of work in the table inspector for the record summary stuff, and this actually just made my development process easier. I think it will benefit users too.

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[seancolsen]

@pavish I've assigned you to review from a code/implementation perspective.

@ghislaineguerin I've assigned you to review from a UX/product perspective to make sure that this is something we want.

[ghislaineguerin]

The proposed UX makes sense. We should store the user's visibility preferences.

[pavish]

Looks good to me