use query-string replace qs

@@ -15,7 +15,7 @@
     "antd": "^3.10.9",
     "dva": "^2.4.0",
     "moment": "^2.22.2",
-    "qs": "^6.6.0",
+    "query-string": "^6.0.0",
     "react": "^16.6.3",
     "umi-request": "^1.0.0"
   },

 import { routerRedux } from 'dva/router';
-import { stringify } from 'qs';
+import { stringify } from 'query-string';
 import { getPageQuery } from './utils/utils';
 import { setAuthority } from './utils/authority';
 import { reloadAuthorized } from './utils/Authorized';

@@ -17,7 +17,6 @@
     "hash.js": "^1.1.5",
     "moment": "^2.22.2",
     "nzh": "^1.0.3",
-    "qs": "^6.6.0",
     "react": "^16.6.3",
     "umi-request": "^1.0.0"
   },