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/views/example/tab/index.vue

@@ -20,10 +20,10 @@ export default {
   data() {
     return {
       tabMapOptions: [
-        { label: '中国', key: 'CN' },
-        { label: '美国', key: 'US' },
-        { label: '日本', key: 'JP' },
-        { label: '欧元区', key: 'EU' }
+        { label: 'China', key: 'CN' },
+        { label: 'USA', key: 'US' },
+        { label: 'Japan', key: 'JP' },
+        { label: 'Eurozone', key: 'EU' }
       ],
       activeName: 'CN',
       createdTimes: 0