修复history排序bug

src/components/History.vue

@@ -29,6 +29,7 @@ export default {
       search: '',
       loading: false,
       groupBy: 'block',
+      groupDesc: true,
       sortBy: ['block', 'index'],
       sortDesc: [true, false],
       pageSize: 200,

src/components/Pending.vue

@@ -29,6 +29,7 @@ export default {
       search: '',
       loading: false,
       groupBy: 'block',
+      groupDesc: false,
       sortBy: ['block', 'gasPrice', 'pending'],
       sortDesc: [false, true, false],
       pageSize: 200,

src/components/viewer/Table.vue

@@ -17,7 +17,7 @@
 
       <!-- 表格主体 -->
       <v-data-table calculate-widths multi-sort
-                    :group-by="table.groupBy"
+                    :group-by="table.groupBy" :group-desc="table.groupDesc"
                     :headers="table.headers" :items="table.data" :search="table.search" :loading="table.loading"
                     :items-per-page="table.pageSize" :page="table.pageNum"
                     :sort-by="table.sortBy" :sort-desc="table.sortDesc">