增加清空节点同步任务、清空DNS同步任务功能

web/views/@default/clusters/tasks/listPopup.html

@@ -1,10 +1,11 @@
 {$layout "layout_popup"}
 
-<h3>正在同步的节点任务<span v-if="countTasks > 0">(共{{countTasks}}个)</span>
-    <a href="" v-if="countCheckedTasks() > 0" @click.prevent="deleteBatch">批量删除{{countCheckedTasks()}}个任务</a>
-</h3>
-<p class="comment" v-if="clusters.length == 0">暂时没有同步的集群。</p>
+<h3>正在同步的节点任务<span v-if="countTasks > 0">(共{{countTasks}}个)</span></h3>
+<p class="comment" v-if="clusters.length == 0">暂时没有同步的任务。</p>
 <div v-if="clusters.length > 0">
+    <button class="ui button basic tiny" @click.prevent="deleteAllTasks">清空所有任务</button> &nbsp;
+    <button class="ui button basic tiny" v-if="countCheckedTasks() > 0" @click.prevent="deleteBatch">批量删除{{countCheckedTasks()}}个任务</button>
+
     <table class="ui table selectable celled">
         <thead>
             <tr>

web/views/@default/clusters/tasks/listPopup.js

@@ -65,7 +65,7 @@ Tea.context(function () {
     }
 
     this.deleteBatch = function () {
-        var taskIds = []
+        let taskIds = []
         this.clusters.forEach(function (cluster) {
             cluster.tasks.forEach(function (task) {
                 if (task.isChecked) {
@@ -85,4 +85,14 @@ Tea.context(function () {
                 })
         })
     }
+
+	this.deleteAllTasks = function () {
+		let that = this
+		teaweb.confirm("确定要清空所有的任务吗？", function () {
+			that.$post(".deleteAll")
+				.success(function () {
+					teaweb.reload()
+				})
+		})
+	}
 })