public://languages should also be excluded by default

The module defines a default backup source for files and, correctly, excludes a number of sub folders from the public files directory as they contain generated content. However, in multilingual or non English installs, Drupal also creates a languages directory that contains translations that are used in js. So i think it woul be better if this modules excludes that folder by default as well.

To do so, change this: File includes\sources.filesource.inc, line 70 to:

  function backup_settings_default() {
     return array(
      'exclude_filepaths' => "backup_migrate\nstyles\ncss\njs\nlanguages\nctools\nless",
    );
  }