* UX: More additions
* UX: more
* DEV: Add admin/config/themes route
* UX: Use admin config card
* syntax merge fixes
* cleanup
* cleanup
* checkbox
* more
* error
* save on click
* more
* fix setter
* DEV: Implement vanilla checkbox
* cleanup
* UX: save themes as default
* DEV: Add component list to card
* DEV: Add placeholder for no screenshots
* DEV: Fix default theme reactivity
Also add content/optionalAction yields to config area
card and put the theme user selectable checkbox there,
along with adding styles.
* DEV: Change to generic "look and feel" config area
* DEV: Auto redirect to themes on base look and feel route
* UX: Remove computed from sorted themes
* linting
* UX: Turn update icon into button that routes to settings
* DEV: remove unused function
* UX: center icons with title
* DEV: Lint
* UX: Hook up theme preview button
* DEV: Minor fixes
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Co-authored-by: Martin Brennan <martin@discourse.org>
Co-authored-by: Joffrey JAFFEUX <j.jaffeux@gmail.com>
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