Small changes to css to clean up code

web/react/pages/channel.jsx

@@ -225,7 +225,7 @@ global.window.setup_channel_page = function(team_name, team_type, team_id, chann
     );
 
     React.render(
-        <FileUploadOverlay 
+        <FileUploadOverlay
             overlayType='center' />,
         document.getElementById('file_upload_overlay')
     );