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/index.tsx

@@ -15,6 +15,7 @@ import ScrollToTop from "~/components/ScrollToTop";
 import Theme from "~/components/Theme";
 import Toasts from "~/components/Toasts";
 import env from "~/env";
+import Desktop from "./components/DesktopEventHandler";
 import LazyPolyfill from "./components/LazyPolyfills";
 import Routes from "./routes";
 import Logger from "./utils/Logger";
@@ -92,6 +93,7 @@ if (element) {
                         </ScrollToTop>
                         <Toasts />
                         <Dialogs />
+                        <Desktop />
                       </>
                     </Router>
                   </LazyMotion>