Add gacha details page.

src/main/resources/languages/zh-CN.json

@@ -349,5 +349,14 @@
     "resetshop": {
       "description": "重置商店刷新时间"
     }
+  },
+  "gacha": {
+    "details": {
+      "title": "Banner Details",
+      "available_five_stars": "Available 5-star Items",
+      "available_four_stars": "Available 4-star Items",
+      "available_three_stars": "Available 3-star Items",
+      "template_missing": "data/gacha_details.html is missing."
+    }
   }
 }