Feature/english (#381)

* perf[navbar]: set langSelect to component && refine errorLog component

* feat[login]:add 18n to login form

* fix[pagination]: fixed when selected page-sizes

* perf[i18n]:dashboard document svg permission

* perf[charts]: perf effect

* perf[i18n]:excel && zip

* perf[i18n]: table && errorLog && theme

* perf[i18n]: components

* perf[i18n]: direct use $t

* perf[i18n]: complex-table

* update README.md

* update README.md 📘

* perf[i18n]: refine code comments

src/components/Upload/singleImage3.vue

@@ -7,7 +7,6 @@
 		</el-upload>
 		<div class="image-preview image-app-preview">
 			<div class="image-preview-wrapper" v-show="imageUrl.length>1">
-				<div class='app-fake-conver'>&nbsp&nbsp全球 付费节目单 最热 经济</div>
 				<img :src="imageUrl">
 				<div class="image-preview-action">
 					<i @click="rmImage" class="el-icon-delete"></i>