Misc. UI fixes

[emccorson]

The main change here is making the proposals table columns have fixed widths so it doesn't move about when the data changes. I think my solution is a bit hacky so I'm not very happy with it, so if there is a better way then please let me know about it.

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Fixed

• Make proposals table columns fixed widths
• Fix more instances of wrong black color
• Remove vote button on live proposals list
• Fix lintstaged braces warning

[github-actions[bot]]

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