Translations update from Hosted Weblate (#3177)

* fix broken files containing keys from messages namespace
* pre-fill missing translations with english
* new command to pre-fill empty translations
* fix locale in filename
* activate locales fa and nb_NO

Co-authored-by: Allan Nordhøy <epost@anotheragency.no>
Co-authored-by: Eric <alchemillatruth@purelymail.com>
Co-authored-by: J. Lavoie <j.lavoie@net-c.ca>
Co-authored-by: Oğuz Ersen <oguzersen@protonmail.com>
Co-authored-by: Weblate <noreply@weblate.org>
Co-authored-by: Wellington Terumi Uemura <wellingtonuemura@gmail.com>
Co-authored-by: Yaron Shahrabani <sh.yaron@gmail.com>
Co-authored-by: Kevin Papst <kpapst@gmx.net>

translations/messages.de.xlf

@@ -251,7 +251,7 @@
         <target>Die Anfrage konnte nicht verarbeitet werden. Es wurden zu viele Ergebnisse gefunden.</target>
       </trans-unit>
       <trans-unit id="GzWKgBk" resname="error.directory_missing">
-        <source>error.directory_missing</source>
+        <source>The directory “%dir%” does not exist and could not be created.</source>
         <target>Das Verzeichnis „%dir%“ existiert nicht und konnte auch nicht erstellt werden.</target>
       </trans-unit>
       <trans-unit id="C2TGff0" resname="error.directory_protected">