Pull request: client: upd i18n

Merge in DNS/adguard-home from 2643-upd-i18n to master

Squashed commit of the following:

commit 2efafe2b4c5e88b527375aa1f98d92ddd04efaed
Merge: 7a9a2f3a ed5f8271
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Dec 15 14:45:28 2021 +0300

    Merge branch 'master' into 2643-upd-i18n

commit 7a9a2f3af3a44f66e46c2131d28e07a8204cd3bb
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date:   Wed Dec 15 14:41:03 2021 +0300

    client: upd i18n

client/src/__locales/sr-cs.json

@@ -26,7 +26,6 @@
     "form_error_mac_format": "Nevažeći MAC format",
     "form_error_client_id_format": "Nevažeći format klijenta",
     "form_error_positive": "Mora biti veće od 0",
-    "form_error_negative": "Mora biti 0 ili veće",
     "dhcp_form_gateway_input": "IP mrežnog prolaza",
     "dhcp_form_subnet_input": "Subnet mask",
     "dhcp_form_range_title": "Opseg IP adresa",
@@ -551,5 +550,6 @@
     "click_to_view_queries": "Kliknite da pogledate zahteve",
     "port_53_faq_link": "Port 53 je najčešće zauzet od \"DNSStubListener\" ili \"systemd-resolved\" usluga. Pročitajte <0>ovo uputstvo</0> kako da to rešite.",
     "adg_will_drop_dns_queries": "AdGuard Home će odbacivati sve DNS unose od ovog klijenta.",
-    "experimental": "Eksperimentalno"
+    "experimental": "Eksperimentalno",
+    "parental_control": "Roditeljska kontrola"
 }