perf: 调整全局table、侧滑按钮样式等

1.侧滑的按钮大小更改
2.table表头配置放在最后一列
3.table表头高度减小

nezha-fronted/src/components/page/alert/config.vue

@@ -55,11 +55,11 @@
           min-width="110px"
         >
           <template slot="header" slot-scope="scope">
-            <template v-if="index==0">
+            <template v-if="index==tablelable.length-1">
+              <span class="nz-table-txt">{{item.label}}</span>
               <span @click.stop="elementsetShow('shezhi',$event)" class="nz-table-gear">
                 <i class="nz-icon nz-icon-gear"></i>
               </span>
-              <span class="nz-table-txt">{{item.label}}</span>
             </template>
             <div v-else>
               <span>{{item.label}}</span>