- client: Improve DNS Rewrites

Close #1764

Squashed commit of the following:

commit 76af537597b2f3c0860716a45e4e23662cde22c8
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Mon Jul 6 10:59:44 2020 +0300

    - client: Improve DNS Rewrites

client/src/__locales/en.json

@@ -481,6 +481,10 @@
     "domain_desc": "Enter the domain name or wildcard you want to be rewritten.",
     "example_rewrite_domain": "rewrite responses for this domain name only.",
     "example_rewrite_wildcard": "rewrite responses for all <0>example.org</0> subdomains.",
+    "rewrite_ip_address": "IP address: use this IP in an A or AAAA response",
+    "rewrite_domain_name": "Domain name: add a CNAME record",
+    "rewrite_A": "<0>A</0>: special value, keep <0>A</0> records from the upstream",
+    "rewrite_AAAA": "<0>AAAA</0>: special value, keep <0>AAAA</0> records from the upstream",
     "disable_ipv6": "Disable IPv6",
     "disable_ipv6_desc": "If this feature is enabled, all DNS queries for IPv6 addresses (type AAAA) will be dropped.",
     "fastest_addr": "Fastest IP address",

client/src/components/Filters/Rewrites/Form.js

@@ -63,7 +63,14 @@ const Form = (props) => {
                     />
                 </div>
             </div>
-
+            <ul>{['rewrite_ip_address',
+                'rewrite_domain_name',
+                'rewrite_A',
+                'rewrite_AAAA']
+                .map((str) => <li key={str}>
+                    <Trans components={[<code key="0">text</code>]}>{str}</Trans>
+                </li>)
+            }</ul>
             <div className="modal-footer">
                 <div className="btn-list">
                     <button