模型开发和推理服务，增加文件下载功能，增加下载按钮置灰控制功能

ai-modules/login/src/containers/LoginPage/LoginForm.jsx

@@ -29,6 +29,7 @@ class LoginForm extends React.Component {
         let url = res.data && res.data.successRedirectUrl;
         url = `${url}&state=${this.props.referUrl}`;
         window.top.location.href = url;
+        window.top.localStorage.setItem('canDownload', res.data.canDownload);
         this.setState({ loading: false });
       })
       .catch(error => {