Move “export” before decorators

As this is what upstream does.

See also https://github.com/tc39/proposal-decorators/issues/69

app/javascript/flavours/glitch/features/home_timeline/components/column_settings.js

@@ -10,8 +10,8 @@ const messages = defineMessages({
   settings: { id: 'home.settings', defaultMessage: 'Column settings' },
 });
 
-@injectIntl
-export default class ColumnSettings extends React.PureComponent {
+export default @injectIntl
+class ColumnSettings extends React.PureComponent {
 
   static propTypes = {
     settings: ImmutablePropTypes.map.isRequired,

app/javascript/flavours/glitch/features/home_timeline/index.js

@@ -19,9 +19,9 @@ const mapStateToProps = state => ({
   isPartial: state.getIn(['timelines', 'home', 'isPartial']),
 });
 
-@connect(mapStateToProps)
+export default @connect(mapStateToProps)
 @injectIntl
-export default class HomeTimeline extends React.PureComponent {
+class HomeTimeline extends React.PureComponent {
 
   static propTypes = {
     dispatch: PropTypes.func.isRequired,