完成了本地存储功能，用户头像存储方式改为本地，其他细节优化

src/main.js

@@ -6,7 +6,6 @@ import 'element-ui/lib/theme-chalk/index.css'
 import locale from 'element-ui/lib/locale/lang/zh-CN' // lang i18n
 import mavonEditor from 'mavon-editor'
 import 'mavon-editor/dist/css/index.css'
-
 import '@/styles/index.scss' // global css
 
 import App from './App'
@@ -16,6 +15,7 @@ import store from './store'
 
 import '@/icons' // icon
 import './router/index' // permission control
+import Router from 'vue-router'
 
 Vue.use(mavonEditor)
 Vue.use(permission)
@@ -23,6 +23,11 @@ Vue.use(ElementUI, { locale })
 Vue.config.productionTip = false
 require('babel-polyfill')
 
+const routerPush = Router.prototype.push
+Router.prototype.push = function push(location) {
+  return routerPush.call(this, location).catch(error => error)
+}
+
 new Vue({
   el: '#app',
   router,