Obsolete extensions are not grouped at the top of the extension page anymore and instead show an "OBSOLETE" warning text with a the "uninstall" action.
* Fix translation formatting of Custom Theme docs
* Update available languages
* Update changed string in other languages
Avoids re-translation effort
* Revert change to i18n locale resources
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Co-authored-by: schroda <50052685+schroda@users.noreply.github.com>
The local source is always shown, and therefore its language ("other") should only be shown in the language filter in case an actual source is installed that supports is of "other" language.
Switch to "lingui" for better DX.
Tried to persist existing languages as much as possible.
Removed "vite-plugin-node-polyfills" because it's incompatible with "lingui"
