TODO#129653 1. 更新 icon 檔案 2. add UI - GoToTop btn

Mila

2021-11-03 ebe919df430a00af830ff36dd95d70490558b1cb

 PAMapp/layouts/default.vue

@@ -1,5 +1,6 @@
<template>
    <div class="pam-background">
        <UiGoToTop></UiGoToTop>
        <BackActionBar></BackActionBar>
        <Nuxt class="page-container"></Nuxt>
    </div>