Classic Theme Restorer 1.4.3beta8
https://addons.mozilla.org/ja/firefox/addon/classicthemerestorer/versions/1.4.3beta8
[locale] Polish (pl-PL) translation updated (thanks to Mrere)
[locale] Estonian (et) translation updated (thanks to Maidur)
[new option > General UI (1)] open 'about:preferences' in a window (v2)
* visually closer to the 'old appearance'
* preview: http://i.imgur.com/2UbT7iw.png
[change] moved 'about:preferences' options into a menulist
* previously used options have to be set again
[change] tweaks on previous 'about:preferences' options