Pull request: client: imp en locale

Merge in DNS/adguard-home from imp-i18n to master

Squashed commit of the following:

commit 04192f2eb3dda1059da442dd29c7d3b46cc4c538
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Thu Aug 26 15:39:16 2021 +0300

    client: imp en locale

client/src/__locales/en.json

@@ -208,7 +208,7 @@
     "example_upstream_sdns": "you can use <0>DNS Stamps</0> for <1>DNSCrypt</1> or <2>DNS-over-HTTPS</2> resolvers",
     "example_upstream_tcp": "regular DNS (over TCP)",
     "all_lists_up_to_date_toast": "All lists are already up-to-date",
-    "updated_upstream_dns_toast": "Updated the upstream DNS servers",
+    "updated_upstream_dns_toast": "Upstream servers successfully saved",
     "dns_test_ok_toast": "Specified DNS servers are working correctly",
     "dns_test_not_ok_toast": "Server \"{{key}}\": could not be used, please check that you've written it correctly",
     "unblock": "Unblock",
@@ -235,7 +235,7 @@
     "loading_table_status": "Loading...",
     "page_table_footer_text": "Page",
     "rows_table_footer_text": "rows",
-    "updated_custom_filtering_toast": "Updated the custom filtering rules",
+    "updated_custom_filtering_toast": "Custom rules successfully saved",
     "rule_removed_from_custom_filtering_toast": "Rule removed from the custom filtering rules: {{rule}}",
     "rule_added_to_custom_filtering_toast": "Rule added to the custom filtering rules: {{rule}}",
     "query_log_response_status": "Status: {{value}}",