Herramientas avanzadas para TW por avm99963 (Adrià Vilanova Martínez)

## Changes

- **Switched from Manifest V2 to Manifest V3 in the Stable channel**

MV3 is the newest version of the Chrome Extensions platform. Beta and Canary
releases have been built with MV3 for a long time, but this is the first Stable
release built with MV3.

- **Dark theme improvements**

- Adjust correctly the theme of the new "report" dialog

The new report dialog appeared with a light theme and its background
made some flashes.

This version fixes the theme mismatch by forcing the dialog theme to match
the one set in the CC, and it also fixes the background flashes.

- Fix dialogs close button color.
- Fix color for error messages when loading threads.
- Fix "duplicate thread" dialog buttons color.

[Please keep the reports coming][new-dark-theme-issue] if you find something which is not styled correctly! :)

- Now the theme switch via the button in the CC is instant. It doesn't do a full
page reload to apply the theme change.

- **"Reduce whitespace" feature now works again in thread lists in mobile**

A long time ago this feature added styles to improve the thread lists UI in small
screens like mobile phones. They had to be removed because an update to the
Community Console broke them, but the styles have now been fixed and thus
are back in this release.

- **Added German translation**, thanks to Njord Holm!

- **Added Japanese translation**, thanks to Jun KOBAYASHI!

- **Added Korean translation**, thanks to 김태윤!

- **Updated Arabic, French, Italian, and Russian translations**, thanks to @Wylifan and @medelinor-1!

And many other minor/under-the-hood improvements that you can check out in the
complete changelog:
https://gerrit.avm99963.com/plugins/gitiles/infinitegforums/+log/refs/tags/v2.9.0..refs/tags/v3.0.0

In particular, I'm undertaking a big refactor of the extension, so if there's any bugs, please let me know!

[new-dark-theme-issue]: https://bugs.avm99963.com/p/twpowertools/issues/entry?template=Feature+Request&components=Features%3EDarkTheme&summary=Dark%20theme%20issue&description=Please%20describe%20the%20dark%20theme%20issue:
[canary]: https://gerrit.avm99963.com/plugins/gitiles/infinitegforums/+/HEAD/docs/contributing.md#canary-channel