feat: Czech, Slovak localization (#3095)

* feat: add l10n Czech, Slovak language support

* feat: i18n Czech, Slovak translation

web/src/Setting.js

@@ -56,6 +56,8 @@ export const Countries = [
   {label: "Українська", key: "uk", country: "UA", alt: "Українська"},
   {label: "Қазақ", key: "kk", country: "KZ", alt: "Қазақ"},
   {label: "فارسی", key: "fa", country: "IR", alt: "فارسی"},
+  {label: "Čeština", key: "cs", country: "CZ", alt: "Čeština"},
+  {label: "Slovenčina", key: "sk", country: "SK", alt: "Slovenčina"},
 ];
 
 export function getThemeData(organization, application) {

web/src/i18n.js

@@ -125,6 +125,14 @@ function initLanguage() {
       case "fa":
         language = "fa";
         break;
+      case "cs":
+      case "cs-CZ":
+        language = "cs";
+        break;
+      case "sk":
+      case "sk-SK":
+        language = "sk";
+        break;
       default:
         language = Conf.DefaultLanguage;
       }