message: Minor comments update
diff: @@ -947,13 +947,14 @@ QVariant FileTableModel::data(const QModelIndex & index, int role) const
  if (role == Qt::DecorationRole && column == FILE_COLUMN_NAME) {
  QIcon icon;
  +
  + // These are the thumnail types supported by the server (as of 2019.1)
  static QSet<QString> image_file_types = {"gif", "png", "jpg", "jpeg", "ico"};
  if (dirent.isDir()) {
  icon = dirent.readonly
  ? QIcon(":/images/files_v2/file_folder_readonly.png")
  : QIcon(":/images/files_v2/file_folder.png");
  } else if (image_file_types.contains(QFileInfo(dirent.name).suffix().toLower())) {
  - // these format only supported by server.
  FileBrowserDialog *dialog =
  (FileBrowserDialog *)(QObject::parent());
  ThumbnailService *service = ThumbnailService::instance();
  