+ client: 1889 Show a link to the FAQ article about Ubuntu when port 53 is in use

Close #1889

Squashed commit of the following:

commit 4fa57f692d0a66d20e9ba9d235ec423e5118db20
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Fri Jul 17 17:28:38 2020 +0300

    Revert "Update locales"

    This reverts commit dd88f8047e612022678dfabe8dda446c4b8f201b.

commit dd88f8047e612022678dfabe8dda446c4b8f201b
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Fri Jul 17 17:26:00 2020 +0300

    Update locales

commit 954ae2e97e988b53856766100c873e6d40b75123
Merge: 28f205a8 c1e56c83
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Fri Jul 17 17:23:50 2020 +0300

    Merge branch 'master' into feature/1889

commit 28f205a858281811af7d708356e10108983c7292
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Fri Jul 17 15:39:57 2020 +0300

    Rename systemdns-resolved ---> systemd-resolved

commit 3d62e26984f73285a7b788b6f42efcb3376ae562
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Fri Jul 17 15:15:10 2020 +0300

    Add commas to port 53 locale

commit 457563085186244dca36a80a959e5a9486558299
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Fri Jul 17 13:34:13 2020 +0300

    minor

commit 7aacf879951f8ab619824730cb28ea5cd2518812
Author: ArtemBaskal <a.baskal@adguard.com>
Date:   Fri Jul 17 13:27:55 2020 +0300

    + client: Show a link to the FAQ article about Ubuntu when port 53 is in use

client/src/__locales/en.json

@@ -563,5 +563,6 @@
     "filter_category_regional_desc": "Lists that focus on regional ads and tracking servers",
     "filter_category_other_desc": "Other blocklists",
     "original_response": "Original response",
-    "click_to_view_queries": "Click to view queries"
+    "click_to_view_queries": "Click to view queries",
+    "port_53_faq_link": "Port 53 is often occupied by \"DNSStubListener\" or \"systemd-resolved\" services. Please read <0>this instruction</0> on how to resolve this."
 }