Following up on #9192, this makes use of the new mechanism for the theme
names.
The dummy string added for testing is removed again here. All
translations are updated to the new nested syntax, except Chinese
(zh-HK) where the string weren't actually translated.
* Normalize EOL before EOF.
* Import current Transifex state, only translated.
Skip duplicated and completely empty languages.
* Re-add untranslated strings to JSON files.
These are now treated correctly as untranslated, but present with the
original (English) translation key.
* Update valid language codes and names.
* Refer to Weblate instead of Transifex for translations.
* lang-es: Copy untranslated strings from es-ES.
* Integrate translation changes from Weblate.
Translated using Weblate (Polish)
Currently translated at 100.0% (512 of 512 strings)
Translation: Syncthing/GUI strings
Translate-URL: https://hosted.weblate.org/projects/syncthing/gui/pl/
Translated using Weblate (Danish)
Currently translated at 98.6% (505 of 512 strings)
Translation: Syncthing/GUI strings
Translate-URL: https://hosted.weblate.org/projects/syncthing/gui/da/
Translated using Weblate (Lithuanian)
Currently translated at 85.4% (441 of 516 strings)
Translation: Syncthing/GUI strings
Translate-URL: https://hosted.weblate.org/projects/syncthing/gui/lt/
Translated using Weblate (French)
Currently translated at 100.0% (516 of 516 strings)
Translation: Syncthing/GUI strings
Translate-URL: https://hosted.weblate.org/projects/syncthing/gui/fr/
Translated using Weblate (Danish)
Currently translated at 98.6% (509 of 516 strings)
Translation: Syncthing/GUI strings
Translate-URL: https://hosted.weblate.org/projects/syncthing/gui/da/
Translated using Weblate (Spanish)
Currently translated at 100.0% (516 of 516 strings)
Translation: Syncthing/GUI strings
Translate-URL: https://hosted.weblate.org/projects/syncthing/gui/es/
* translation update uses weblate
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Co-authored-by: Jakob Borg <jakob@kastelo.net>