Pull request: beta client squashed

Merge in DNS/adguard-home from beta-client-2 to master

Squashed commit of the following:

commit b2640cc49a6c5484d730b534dcf5a8013d7fa478
Merge: 659def862 aef4659e9
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Dec 29 19:23:09 2020 +0300

    Merge branch 'master' into beta-client-2

commit 659def8626467949c35b7a6a0c99ffafb07b4385
Author: Eugene Burkov <e.burkov@adguard.com>
Date:   Tue Dec 29 17:25:14 2020 +0300

    all: upgrade github actions node version

commit b4b8cf8dd75672e9155da5d111ac66e8f5ba1535
Author: Vladislav Abdulmyanov <v.abdulmyanov@adguard.com>
Date:   Tue Dec 29 16:57:14 2020 +0300

    all: beta client squashed

client2/src/components/App.tsx

@@ -0,0 +1,16 @@
+import { observer } from 'mobx-react-lite';
+import React, { FC, useContext } from 'react';
+import Store from 'Store';
+import Icons from 'Lib/theme/Icons';
+
+const App: FC = observer(() => {
+    const store = useContext(Store);
+    return (
+        <div>
+            {store.ui.currentLang}
+            <Icons/>
+        </div>
+    );
+});
+
+export default App;