更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/underscore/amd/toString.js

@@ -0,0 +1,11 @@
+define(['./value'], function (value) {
+
+  // Provide an unwrapping proxy for automatic string coercion in engine
+  // operations such as JSON stringification.
+  function toString(wrapper) {
+    return String(value(wrapper));
+  }
+
+  return toString;
+
+});