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

public/react/src/modules/courses/Video/VideoIndex.js

@@ -361,10 +361,11 @@ class VideoIndex extends Component {
 											{
 												videoId ?
 												  ""
-													:
+													:videos&&videos.length>0?
 													<WordsBtn style="blue" className="ml30 font-16 tongjis"
 																		onClick={() => this.statisticsy(true)}
 													><i className="iconfont icon-tongji1 mr5 font-14"></i>统计</WordsBtn>
+													:""
 											}
 
 										</span>

public/react/src/modules/courses/signin/student/Signedinlist.js

@@ -336,11 +336,11 @@ class Signedinlist extends Component {
 
             <Row type="flex" justify="end">
 
-              {this.props.defaultActiveKey==="2"?<Col className={"Signedintextright "}>
+              {this.props.defaultActiveKey==="2"?<Col className={"Signedintextright mr5"}>
                 <span className={"color26C7C9 mr20"}>正常签到：{data&&data.normal_count}</span>
                 <span className={"colorEAAE4E mr20"}>请假：{data&&data.leave_count}</span>
                 <span className={"colorFF835C"}>旷课：{data&&data.absence_count}</span>
-              </Col>:<Col className={"Signedintextright "}>
+              </Col>:<Col className={"Signedintextright  mr5"}>
                 <span className={"mr20"}>已签到：<span className={"color1890FF"}>{this.state.course_members_count}</span></span>
                 <span>应签到：<span className={"color1890FF"}>{this.state.attendance_count}</span></span>
               </Col>}