i18n: Translate locale section

src/public/app/widgets/type_widgets/options/appearance/i18n.js

@@ -1,14 +1,15 @@
 import OptionsWidget from "../options_widget.js";
 import server from "../../../../services/server.js";
 import utils from "../../../../services/utils.js";
+import { t } from "../../../../services/i18n.js";
 
 const TPL = `
 <div class="options-section">
-    <h4>Localization</h4>
+    <h4>${t("i18n.title")}</h4>
 
     <div class="form-group row">
         <div class="col-6">
-            <label>Language</label>
+            <label>${t("i18n.language")}</label>
             <select class="locale-select form-control"></select>
         </div>
     </div>

src/public/translations/en/translation.json

@@ -536,7 +536,6 @@
     "delete_success": "Attachment '{{title}}' has been deleted.",
     "convert_confirm": "Are you sure you want to convert attachment '{{title}}' into a separate note?",
     "convert_success": "Attachment '{{title}}' has been converted to note.",
-        "rename_attachment": "Rename attachment",
     "enter_new_name": "Please enter new attachment's name"
   },
   "calendar": {
@@ -1115,5 +1114,9 @@
     "title": "Automatic Read-Only Size",
     "description": "Automatic read-only note size is the size after which notes will be displayed in a read-only mode (for performance reasons).",
     "label": "Automatic read-only size (text notes)"
+  },
+  "i18n": {
+    "title": "Localization",
+    "language": "Language"
   }
 }