cabana: dbc github list only includes .dbc files

src/components/GithubDbcList.js

@@ -32,6 +32,7 @@ export default class GithubDbcList extends Component {
 
   componentWillMount() {
     this.props.openDbcClient.list(this.props.repo).then((paths) => {
+      paths = paths.filter((path) => path.indexOf(".dbc") !== -1);
       this.setState({paths})
     })
   }