Add messages for holidays

aleksis/core/frontend/messages/en.json

@@ -317,5 +317,14 @@
   },
   "selection": {
     "num_items_selected": "No items selected | 1 item selected | {n} items selected"
+  },
+  "holidays": {
+    "menu_title": "Holidays",
+    "title": "Holiday",
+    "title_plural": "Holidays",
+    "create_holiday": "Create Holiday",
+    "date_start": "Start Date",
+    "date_end": "End Date",
+    "holiday_name": "Name"
   }
 }