!52 fix 优化表格列的显示与隐藏小组件不显示tip和浏览器告警

Merge pull request !52 from bestrevens/ts

src/components/RightToolbar/index.vue

@@ -8,6 +8,7 @@
         <el-button circle icon="Refresh" @click="refresh()" />
       </el-tooltip>
       <el-tooltip class="item" effect="dark" content="显示/隐藏列" placement="top" v-if="columns">
+        <div>
           <el-popover placement="bottom" trigger="click">
             <div class="tree-header">显示/隐藏列</div>
             <el-tree
@@ -22,6 +23,7 @@
               <el-button circle icon="Menu" />
             </template>
           </el-popover>
+        </div>
       </el-tooltip>
     </el-row>
   </div>