opt:多语言引入，返回给前端修改

nladmin-system/nlsso-server/src/main/resources/language/i18n/lang_zh.js

@@ -0,0 +1,13 @@
+var config = {
+  "lang": "English222",
+  "platform": {
+    "title": "NOBLELIFT Platform",
+    "tip1": "The user name cannot be empty",
+    "tip2": "The password cannot be empty",
+    "tip3": "当前语言中文"
+  },
+  "common": {
+    "home": "Dashboard",
+    "Layout_setting": "Layout Setting"
+  }
+}