Desktop support (#4484)

* Remove home link on desktop app

* Spellcheck, installation toasts, background styling, …

* Add email,slack, auth support

* More desktop style tweaks

* Move redirect to client

* cleanup

* Record desktop usage

* docs

* fix: Selection state in search input when double clicking header

app/utils/language.ts

@@ -1,4 +1,5 @@
 import { i18n } from "i18next";
+import Desktop from "./Desktop";
 
 export function detectLanguage() {
   const [ln, r] = navigator.language.split("-");
@@ -13,6 +14,9 @@ export function changeLanguage(
   if (toLanguageString && i18n.language !== toLanguageString) {
     // Languages are stored in en_US format in the database, however the
     // frontend translation framework (i18next) expects en-US
-    i18n.changeLanguage(toLanguageString.replace("_", "-"));
+    const locale = toLanguageString.replace("_", "-");
+    i18n.changeLanguage(locale);
+
+    Desktop.bridge?.setSpellCheckerLanguages(["en-US", locale]);
   }
 }