资产来源增加提示

src/App.js

@@ -72,6 +72,7 @@ export class App extends React.Component {
           reference='metadata'
           readOnly={true} 
           showCustom={false}
+          showTrash={false}
           checkable={true}
           onCheck={(values) => { 
             callback&&callback(values); 

src/view/Manage/AssetManage/Component/AssetTable.jsx

@@ -51,7 +51,7 @@ const AssetTable = (props) => {
         <div style={{ display: 'flex', alignItems: 'center'  }}>
           <AppContext.Consumer>
           {
-            value => <Tooltip title={(typeof metadata==='string')?'':(readOnly?'暂无关联的元数据':'暂无关联的元数据，如需关联，请在资产项里进行设置')}>
+            value => <Tooltip title={(typeof metadata==='string')?(readOnly?'暂无关联的元数据':'暂无关联的元数据，如需关联，请在资产项里进行设置'):''}>
               <Button 
                 type='link'
                 size='small'