Merge remote-tracking branch 'origin/topic_bank' into topic_bank

public/react/src/App.js

@@ -346,7 +346,7 @@ class App extends Component {
 		}
 	}
 	disableVideoContextMenu = () => {
-		window.$( "body" ).on( "mousedown", "video",  function() {
+		window.$( "body" ).on( "mousedown", "video",  function(event) {
 			if(event.which === 3) {
 				window.$('video').bind('contextmenu',function () { return false; });
 			} else {

public/react/src/modules/courses/shixunHomework/Listofworksstudentone.js

@@ -3035,6 +3035,7 @@ class Listofworksstudentone extends Component {
 							:
 							// 学生能查看别人的
 							<div className=" clearfix "  style={{margin:  "auto" , minWidth:"1200px"}}>
+								{/*双层*/}
 								<DownloadMessageysl
 									{...this.props}
 									value={this.state.DownloadMessageval}