message: [fix] Nodes count when switching flag show hidden nodes
diff: <v-data-table
  :headers="headers"
  - :items="nodes"
  + :items="tableNodes"
  :rows-per-page-items="[10, 20, {'text':'All','value':-1}]"
  item-key="node_id"
  class="elevation-1"
  <template slot="items" slot-scope="props">
  <tr
  style="cursor:pointer;"
  - v-if="!props.item.failed"
  :active="selectedNode == props.item"
  @click="selectedNode == props.item ? selectedNode = null : selectedNode = props.item"
  >
  <td>{{ props.item.node_id }}</td>
  <td>{{ props.item.type }}</td>
  <td>{{ props.item.ready ? (props.item.product + ' (' + props.item.manufacturer + ')') : '' }}</td>
  - <td>{{ props.item.name }}</td>
  - <td>{{ props.item.loc }}</td>
  - <td>{{ props.item.status}}</td>
  - </tr>
  - <tr
  - v-else-if="showHidden"
  - :active="selectedNode == props.item"
  - @click="selectedNode == props.item ? selectedNode = null : selectedNode = props.item"
  - >
  - <td>{{ props.item.node_id }}</td>
  - <td>{{ props.item.type }}</td>
  - <td>{{ '' }}</td>
  - <td>{{ '' }}</td>
  - <td>{{ '' }}</td>
  + <td>{{ props.item.name || '' }}</td>
  + <td>{{ props.item.loc || '' }}</td>
  <td>{{ props.item.status}}</td>
  </tr>
  </template>
  @@ -422,6 +409,9 @@ export default {
  computed: {
  dialogTitle() {
  return this.editedIndex === -1 ? "New Value" : "Edit Value";
  + },
  + tableNodes() {
  + return this.showHidden ? this.nodes : this.nodes.filter(n => !n.failed)
  }
  },
  watch: {
  