Fixed the Settings Menu

[jameskerr]

Just a few files change. 🤣

I redid the settings modal, and updated all form elements in the app. Hopefully for the last time.

And the bug about the brimcap file is fixed.

Fixes #2949

[philrz]

@jameskerr and I had an offline discussion about my first impressions upon reviewing the new design in this PR. At first I was thrown by the lack of an explicit Save button like we used to have in the old Settings menu. The one thing this loses us is the ability to start making a change but then hit Esc or click Cancel to back out and leave the prior setting intact. However, after a quick review of some modern tools like Slack and VSCode, I could see that the approach used here where changes are effectively committed immediately is now more in vogue. I've quickly adjusted to the new paradigm and I'm optimistic our users will as well.