Pull request: client: imp setup guide

Merge in DNS/adguard-home from imp-setup-guide to master

Squashed commit of the following:

commit 06c92e3
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Apr 15 14:54:40 2021 +0300

    client: imp setup guide

client/src/__locales/en.json

@@ -311,7 +311,7 @@
     "install_devices_router": "Router",
     "install_devices_router_desc": "This setup will automatically cover all the devices connected to your home router and you will not need to configure each of them manually.",
     "install_devices_address": "AdGuard Home DNS server is listening on the following addresses",
-    "install_devices_router_list_1": "Open the preferences for your router. Usually, you can access it from your browser via a URL, such as http://192.168.0.1/ or http://192.168.1.1/. You may be prompted to enter a password. If you don't remember it, you can often reset the password by pressing a button on the router itself, but be aware that if this procedure is chosen, you will probably lose the entire router configuration. Some routers require a specific application that should already be installed on your computer or phone.",
+    "install_devices_router_list_1": "Open the preferences for your router. Usually, you can access it from your browser via a URL, such as http://192.168.0.1/ or http://192.168.1.1/. You may be prompted to enter a password. If you don't remember it, you can often reset the password by pressing a button on the router itself, but be aware that if this procedure is chosen, you will probably lose the entire router configuration. If your router requires an app to set it up, please install the app on your phone or PC and use it to access the router’s settings.",
     "install_devices_router_list_2": "Find the DHCP/DNS settings. Look for the DNS letters next to a field which allows two or three sets of numbers, each broken into four groups of one to three digits.",
     "install_devices_router_list_3": "Enter your AdGuard Home server addresses there.",
     "install_devices_router_list_4": "On some router types, a custom DNS server cannot be set up. In that case, setting up AdGuard Home as a <0>DHCP server</0> may help. Otherwise, you should check the router manual on how to customize DNS servers on your specific router model.",