Firefox: Pre-Publish Fixes

[ZimCodes]

The changes presented here are mostly bug fixes & tune-ups before publication to the marketplace.

Description

The main goal of this pr is to address the following issues:

Secondary Button in Druthers

I've noticed when switching from a character that does not have a secondary background to a new character that has a secondary background in druthers, the secondary background checkbox will not appear until after clicking Apply. Performing the opposite sequence, the secondary background checkbox will still be visible until Apply is clicked.

This is an issue as now the character that does not have a secondary background will have a visible secondary background checkbox indicating it does have a secondary background.

Secondary Button Refresh

When clicking the secondary background checkbox the Options Page does an unnecessary refresh. The Options Page does not need to be included in the refresh sequence as no secondary theme is applied here.

New Settings Button

Right now the settings button does not have a complete indication of a clickable link. For the most part, it is missing important pseudo class(es) which defines its affordance, specifically hover.

Motivation and Context

https://github.com/doki-theme/doki-theme-web/pull/86#pullrequestreview-847202640

Screenshots (if appropriate):

Extra Refresh Problem

https://user-images.githubusercontent.com/23222943/148665879-97f549b6-3b68-4bb0-a435-7505c967349b.mp4

Secondary Button Problem

https://user-images.githubusercontent.com/23222943/148665904-5a594b86-2022-47bc-926a-863f9d8d448b.mp4

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Non-Functional Change (non-user facing changes)

Checklist:

• [ ] I updated the version (base package.json and re-built the master extension).
• [ ] I updated the changelog with the new functionality.

[ZimCodes]

Ready for review!

[Unthrottled]

Since this still has the stuff from #86 (which hasn't been merged yet), I'm just going to include it in there https://github.com/doki-theme/doki-theme-web/pull/86/commits/9d6123fe26fcfe1907d1774bc4a49b5e6fd44eae and close this pr. Thanks for putting the effort in for creating the pr though.