菜单栏增加单页面刷新功能

1.移除带参路由来回切换data
2.只刷新当前router，不影响其他已缓存的router

src/views/system/function/refresh/index.js

@@ -1,6 +1,7 @@
 export default {
   beforeRouteEnter (to, from, next) {
-    next(instance => instance.$router.replace(from.fullPath))
+    from.meta[from.path] = Date.now()
+    next(instance => instance.$router.replace({ path: from.fullPath, meta: from.meta }))
   },
   render: h => h()
 }